HATSAN FLASHPUP TUNING ***Velocity Tuning / Hammer Spring Tension Adjustment How-To ***

In this video I share my PCP velocity tuning philosophy on long range extreme accuracy and consistency. Also a detailed explanation of how to safely adjust hammer spring tension on the FLASHPUP. Big shout out and credits to Ted from Ted's Holdover. I have learned so much from his videos over the years and encourage you to check them out. Below is a link to the Ted's Holdover channel and the full video of the clip I showed. Happy tuning to all my Brother's out there!
TED'S HOLDOVER "How I won Extreme Benchrest 2016"
• How I Won Extreme Benc...
*******************DISCLAIMER*******************
I AM NOT A PROFESSIONAL AIRGUNSMITH AND ALL CONTENT IS BASED ON PERSONAL OPINIONS AND EXPERIENCES. ANY ATTEMPT TO RECREATE WHAT IS SHOWN IN THIS VIDEO WILL BE DONE AT THE ATTEMPTERS OWN RISK! NOT I PERSONALLY, NOR YOU TUBE, NOR ANY ENTITY BESIDES SAID ATTEMPTER CAN/WILL BE HELD RESPONSIBLE FOR ANY DAMAGE/INJURY TO ANY PERSON OR PROPERTY, YOU VOIDING YOUR WARRANTY, OR YOUR WIFE/GIRLFRIEND LEAVING YOU BECAUSE NOW YOU SPEND ALL YOUR TIME WITH YOUR AIRGUNS! BY VIEWING THE VIDEO YOU ACKNOWLEDGE THE CONTENTS OF THIS DISCLAIMER. BE SAFE AND HAVE FUN!

[@TheManic.5-OH]

43 mins is when the actual adjustment stuff starts happening fyi to anyone interested. Thanks for the video!

[@microwave9099]

That help to skip all the boring parts lol😄

[@TheManic.5-OH]

Hes pretty long winded, but his objective is very helpful! Incredibly intelligent dude. He just needs to decipher videos between smithing and conversation

[@bertbccfu9564]

I wouldn't call it boring parts I would call it him sharing his information and how he came about finding out all the information and the way he tests

[@jimmyhaley727]

toooo much talk for so little to do,,, heheheheh

[@akenedy]

Best shot curve tune (826 FPS peak) shown at time point 33:55 for those who don't want to wade through an hour of verbosity. 25cal version shooting JSB Kings @ 25.29 grains. Hammer-spring adjustment process starts immediately after he explains himself for being overly verbose at time point 36:10. Overall, a very useful video.

[@arsenelupiniii8040]

I'm gonna try those heavy bastards. King Heavy 33,95 grain. I put em through my jet 1 but I bottle feed it and did a bit of benchwork.

[@jimmunch5796]

Here is another much appreciated video. You explain and show everything so well, that it makes it easy for those of us with no talent to tune our rifles. I have not ever had any luck getting Hatsan USA to return a call when I have a question or problem with anything, so I am lucky that you are around producing these videos. I can't believe you don't have at least 10 times more subscribers and views. Thank you so much.

[@jesslanders1700]

I have the Reggi Flash QE. As an air rifle hunter, I would like to express my thanks and gratitude. This video alone has seriously improved my...everything hunting with it. Thank you.

[@williamczupryn2642]

Pressure,pressure, pressure is the absolute key! Chad you are the absolute man. As soon as I got your reply I ran out and took your advise. The flashpup responded exactly as you said it would. I have now found the spot where the valve is most balanced as you say. Approximately eleven shots in from a full charge about 179 bar to 153 ish is my sweet spot. 17 extremely consistent shots in .177 cal. Your advise and suggestions were by far the best I’ve received and the most helpful. This changes everything as far as confidence, consistency and accuracy. You’ve helped me nail down one more very important variable. Thank you so much. Great full to you for answering my questions and for making everyone’s flashpup experience more enjoyable. You are truly a brother in air!

[@brothersinair2064]

"I love it when a plan comes together" John "Hannibal" Smith. Lol It sure is an awesome feeling when you figure stuff like that out and really get to know your gun. Hats off to you on a job well done. Sounds like you got it nailed down! I'm more than glad to help a brother out. Good luck at the competition!

[@motododo4626]

Watched the whole video man didn't skip any of it. Might have been an hour long video but I shared all the same views as you back in the day and only about 1 year ago when I got my first pcp did I realize the importance of tuning. Thanks for the video bud very informative.

[@Dadolphinsmakemecry]

Been lurking watching your videos by way of Airgun reviews and pesting...I have a Vectis .25 and thanks to your channel and his I now have a Huma Air regulated Vectis,have set my hammer to basically zero and first light will be REALLY tuning it in the morning with the chrony and various pellets hoping it hold air. Thanks again!!!

[@brothersinair2064]

Awesome. Have a blast brother.....

[@jaredcattouse7174]

I love your videos brother. Watched em all before I got a flashpup. Have one now and still always watch your videos. Great content man. Waiting for u to put out new videos.

[@gumbystown]

I got a thank-you your videos are some of the most informative thank you for spend so much time in making them I find them really helpful.

[@dnick49]

Great video ! I just got a Flash pup synthetic in 22 caliber. Your video was just what I was looking for. Lotsa great info there. Thanks for the excellent presentation and yes, I just sub'd to your channel.

[@brothersinair2064]

Thanks. Glad it helped you bro!

[@tommyjoestallings3339]

This is no joke. I been looking forward to your next video since your last one. I checked every day. Thanks bro for all your efforts.Your videos have allowed me to break down my flashpup and tune it, clean it & maintaine it, & to keep a enthusiastic approach to my flash pup. I'm 46 and have a family with small children so my financial situation doesn't allow me to purchase a lot of things outside of family needs, but I was able to come up with the money to buy the flashpup and a hand pump and a hawk scope & a few other little whistling & bells like a scope level so I don't can't my shots. And a nice case my wife bought me for Christmas. I ordered some h&n sniper Magnums. The heaviest I could find for this gun,they did not do well with the gun in fact for the first few months I'd almost given up on airguns because the accuracy out of it was horrendous, I was not aware that a air rifle needed a specific pellet to shoot accurately, so after a lot of trial and error i found the pellet that worked. It's crazy but once you find that pellet that runs smooth through your barrel it's magical I couldn't believe the accuracy I was getting out of the flash pup. I don't have a chronograph I don't even have a rangefinder I use a tape measure to measure yardage and a lot of testing because most of my shootings done out of my yard I have a garden and I have an ample supply of crows, doves, pigeons, and squirrels so I have a fixed shooting position. yardage all measured out, it works I said before I have the same gun but in 177. caliber. On windy days I do regret getting the 177. but on those days when there is no wind my caliber really comes through, shoots a lot flatter than the 25. in my opinin. I live in Central Florida to be exact the Daytona Beach area. but I live next to a management area. And in the State of Florida you're allowed to use any caliber PCP air rifle to hunt small game & wild hogs, which are considered a non-game species which can be hunted year-round. Turkey's require a PCP air rifle in 20 caliber or above deer require 30 caliber and above no spinger's no CO2 if you hunt with an air rifle in the State of Florida has to be a PCP and has to be caliber specific for the game you're after. By the way I my call name on here used to be the garden sniper I changed it because of some flak I was getting from specific people so

[@brothersinair2064]

Thanks Tommy! Glad the videos are helpful. You sound like me. A real family man! Saving my pennies now for my next pcp but the girls always have to come first and gymnastics or piano lessons or something is always taking my pile of pennies down. Lol

[@brothersinair2064]

@JumboJohnson. Thanks for the tips. I have the h&n pellets you mentioned. They group decent but cannot compete with the consistency of the jsb pellet at long ranges. I use them for 50yds and in occasionally. I regularly hunt the flashpup out to 80yds so usually go for the jsb as it shoots excellent at long range. I have shot the flashpup off bags. Track driver bag produces the tightest groups. I can shave almost a quarter of an inch off the group with bags but it's not practical to practice shooting this way as I have no bags when hunting in the field and cannot replicate the shot. I only shoot off bags to see what I can get a time or two with a new gun and then I shoot bipod because I take a lot of shots in the field off the pod. As far as taking the girls to an event that would be a blast! Great idea! Would have to travel quite a ways but it would be worth it! They would love it

[@brothersinair2064]

Lots of Turkey here in WI but the darn DNR hasn't added them to the approved list for airgunning. Sure hope things open all the way up here soon!

[@tommyjoestallings3339]

Jumbo Johnson we should get together I live in Daytona Park estates my mom lives in Deltona.

[@brothersinair2064]

@Jumbo Johnson you're very welcome friend. Overall the JSB pellets are the most consistent size and weight and minimal damage upon arrival for me. Air Arms pellets are nice this way as well. As far as my flashpup .25 it's favorite pellet overall is the JSB KING 25.39gr and the JSB KING HEAVY 33.95gr both group and shoot equally accurate for me. I cannot speak on the flashpup .22 or how it will do with any of the JSB pellets because I haven't shot the gun. I have even witnessed two guns of the same make and caliber shooting completely different with the same pellet because of small differences in barrel dimension. That vectis sure is an interesting, intriguing gun. Am very excited to hear how it shoots for you. I am always happy when the JSB pellet is the favorite of one of my guns but that's not always the case. Sometimes the pellet I doubted would group at all ends up grouping the best. It's all so gun and barrel dependent. The vectis is built of off the flash/flashpup platform so I would bet it will do well with the JSB but only testing will tell. Keep me posted on the vectis please as I am very eager to hear some performance info.

[@weirhauch1002]

Finally,this is the detailed unique and informative video I ve been looking for👍.Thanks very much and I hope the shot count was just more on its cylinder.An interesting thing you got the same group resulted with the flas regulated and un regulated.

[@bertbccfu9564]

On my flashpup synthetic 25 originally the plan was to get a regulator but the gun is so damn accurate without it almost three mags of super accuracy that I can't justify getting one

[@psycodata]

Hey man I got sick of taking my flash pup all apart to adjust the hammer spring so I drilled two holes ….one in the side to get at the locking screw and one through the butt pad to get at the hammer spring screw with a very long T handled Allen wrench ….makes tuning much easier!!! Hatsan should make those access holes standard!!

[@raymillsap8613]

Thanks for the video. Had the hatsun flash qe in 25 caliber and love it. Had $250 saved up in bullseye bucks on pyramid air. So pulled the trigger on flashpup in 25 due to your video and the cool factor. Out of the box was shooting over 2.5 inches at 25 yards with AA 25.40 grains doing about853 fps. Slowed down to 8 shot average of 827 fps. Average of 3-5 shot groups was. 685 inches with same pellet for average of 2q foot pounds. Thanks brother! 🙂

[@raymillsap8613]

21 foot pounds.

[@rics44]

Great job teaching the ins and outs of hammer spring tuning . Like some have said you may be a little guilty of over explaining things and rambling a bit but all in all I enjoy your videos and have become a subscriber . I own 5 pellet rifles already but just found a used Hatsan .25cal Flashpup that I couldn't pass up . I think they may be the best value bullpup on the market today . Would love to see more hunting videos if possible especially squirrels , etc. I look forward to your next videos and thanks for sharing your knowledge .

[@brothersinair2064]

Thanks brother. I will admit I am absolutely guilty of rambling and over explaining. I've never done anything like this so I'm learning as I go. The most recent videos and the videos to follow in the future will be shorter, more direct, and geared towards air gunners with at least some experience. I'll try to get some squirrel hunting footage going here this weekend. I've been out several times but sometimes it's just easier not lugging around the cameras and all that. I owe it to the guys that watch the channel though so I'm going to try to get some good stuff on film for everybody👍

[@volturnu]

I just watch this video for the third time and there's always something to think about. Thank you so much for sharing. By the way I own the same gun model but still in factory condition.

[@brothersinair2064]

It's my pleasure brother. Glad you find videos useful. They're nice guns you really can't beat it for the price!

[@cliffb.2416]

Another great video! Look forward to all your videos. I need to get a chronograph and spend more time logging data so I can find tune my .22 cal Flashpup as well as my other guns. Thanks again and have fun digging yourself out today (Approx. 6 inches of snow overnight/today again in eastern WI).

[@brothersinair2064]

Thanks! No kidding on the digging out. Still snowing now at 430pm so were not done yet!

[@cliffb.2416]

@@brothersinair2064 just finished 2.5 hrs of snow throwing, driveway, deck, roof edges so there's no ice dams later when this stuff melts and made a couple long paths through the yard to the main roads so my dog can do it's business, lol. Plus the wildlife likes using those paths, so it gives me pleasure to make their lives easier during hard times, lol I still have more paths to make so I can shoot/put targets out. I call it my backyard snow range/dog walking paths. Take it easy and thanks again for all the great info/video's!

[@brothersinair2064]

@@cliffb.2416I love it! The snow range! Lots of guys hunker down in the winter and never make it out to shoot till the snow melts but I love the snow. Love how still and quiet the woods are in the morning after a snowfall and watching all the wildlife start stirring and moving around again. Fun to do some super soundless stalking in the fresh snow too!

[@cliffb.2416]

@@brothersinair2064 WI people are tough!

[@tombuchanan3971]

hello just want to tell you that i have watched just about all your videos they are just awesome the way you present the subject you are talking about is i a clear understandable way that all even new people to this can relate too i havn't seen any thing new from you would like to see more on the wood flashpup in 22 and maybe something on the bullboss can not make my mind on which to get would like your thoughts on this because i know i can relate to what you say and depend on your opinion thanks again for your time and the effort you put into this

[@leftymadrid]

Yes, I followed Ted'sholdover when he actually started! And yes, he deserves much more respect from the airgun world/industry. At first, even the gun builders of very important brands didn't quite take him seriously. Oh, but they did listen in the end after seeing his progression and his incredible shooting!! All the information started to make sense! So much so that the entire industry started to actually listen to professional shooters. Things they didn't like, and things they loved about certain air guns. We must also of course thank Ed from EDGUN!!!! As being one of THE bravest inventors of quality made airguns ever! And it's Because of these two gentleman, and a few others, that we NOW have a ton of knowledge on bullpups, AND pcp airguns in general... Nice to hear about your 180° learning curve. It IS fantabulous to find the true facts on power, speed, and accuracy once you're deep into this sport/hobby, well I would even say, "way of life" lol Take care bro :-) Real air gunning... "once you're hooked" Forget it!! Right?

[@krustyoldsmoker7997]

Hey my friend now that I have the regulator in my pup I have a regulator set where I like it now I am fine tuning it in tweaking with the hammer to get the best string thanks for all the help of doing a trigger I mean everything you made it easy for me by all your videos thanks again my friend bang bang bang hehehe

[@HerbertCortes]

Great vid. It makes perfect sense. It puts into perspective how to work with unregulated air rifles. I was always looking for high pressure, high fpe. Not anymore.

[@JJonescaraudio1]

Thank you. A gun that used to be a dust collector for me is a new favorite!!

[@bradleyhopper4254]

Love it! This was last nights project. Back to that revived Flashpup Wood .25 I just gotten Refurbished. After he was up and running it was time for a test run. I already watched this video so knew what to look for. It shoots fine. Smooth action.. The sound of it was a dead giv'a'way... and was shot counting and watching the guage. Compared to the Flash .25 it nearly made an audible CRACK!! when fired opposed to the dull "spoink" sound of the other. The guage would visibly drop between shots... So I took him back down, found the set screw and hammer spring adjuster... "Have a longer allen wrench" and did the from there to zero incriment count. Somebody had him 5 cranks out from zero. I havnt even dont the crono math... I backed mine out as a starter from zero 3& 3/4 turns. I knew the typical setting would be between 3 to 4 turns out from zero. Aww man sounds alot better... I shot 2 mags & was then holding 2000 PSI.

[@brothersinair2064]

Sounds like you tamed her down nice! Seems all Hatsan guns arrive over tuned on a Korean cliff. I guess they're trying to meet the industries craving for velocity but at the expense of an unoptimised pcp tune. Gives us a chance to learn the guns inside and out straight away lol

[@bradleyhopper4254]

@@brothersinair2064 Exactly right. Im still getting acquainted with the rifle. Especially a Refurb getting it attuned independantly from WTF knows? Lol .. Its true theres no grid or magic quick fix patented setting. After todays ventures I realised I had tuned it too moderately. After 3 magazines the Pressure Guage was still in the low green at 4 &1/4 turns out on the hammer spring. I took it back out to 5 turns out from zero. I figure a couple dozen high velocity or so before I drop out of the green zone. Im gonna hunt with this guy so Ill give that a whorl... and Oh yes.. Resighting the scope is a must every time the Hammer Spring is changed. Im getting him there. Now my Dad's wanting one too.

[@phillipmendiola1257]

Very well said good information and schooling , I agree with you 100 percent , every pcp rifle has a fps sweet spot for accuracy with the right pellet .

[@brothersinair2064]

Thanks 👍

[@bertbccfu9564]

Exactly and a lot of people do not realize that , I had a friend that had gotten his first PCP air rifle after a couple weeks he gave me a call and said this gun is just no good I think I bought a lemon, I went to his house with my box full of pellets and within probably 20 minutes I had him shooting dime-sized groups, jokingly he was like mad at me, lol 😆 but mostly he was mad at himself for not listening to me from the beginning when I told him that, once we found the right pellet he was in love with the gun again, it almost turned him off of the whole air rifle sport because of the results he was getting he thought they just were not as accurate as Firearms can be some PCP guns are more accurate than most firearms

[@arsenelupiniii8040]

Super true about miss fires, I have my Jet 1 trigger set very light, and safety doesnt really catch, but its my sweet spot. Great video! Everyone is wondering where you went in Airgun/PCP forums? You are an airgun Legend sir!

[@donaldeisenmenger2222]

Don't be a dumb ass like me. I thought I had to remove cheek pad to lift receiver out of the stock. I put the screws back in in all the way so I wouldn't lose them. I realized that the bolt was hitting the rear screw and it wouldn't allow me to access the set screw so I could adjust the hammer spring. I'm very new to air rifles and appreciate all the help I can get. Took me a couple of beers but I figured it out! Thanks for the vid brother!!!

[@cyberflea30]

You said it perfect at the beginning of the video. Choosing the right pellet is vital and will drastically affect your performance with each air gun. Unfortunally all my air guns love the most expensive pellets the most lol.

[@bertbccfu9564]

I really got lucky both of my 22s absolutely love the Crosman Premier hollow point which I can pick up at Walmart 500 for $7 but my higher-end 25s just like yours they have a top shelf taste LOL

[@Nskawtea1]

Very helpful! Thank you!

[@chrisfreyman3582]

My flashpup I bought off of amazon kept jamming, and putting more tension on the hammer fixed the jamming, thanks for the help

[@captainplinkster9783]

I love your challenges !

[@julesgardet659]

Usually after couple of minutes I get annoyed by most _Airheads_ talking nonsense, but I found you as really educating and interesting... I finished watching the whole video !!

[@brothersinair2064]

Awesome! Thanks!

[@johnaverick7468]

A Crony and trigger tuning is my first "must haves" . But like you say , I should pay much more attention to pellet selection for said airgun.

[@rickrazz7136]

Crystal clear explanations.... thanks so much. I sure wish you'd get into the Hatsan Bullboss :)

[@brothersinair2064]

Welcome. My pleasure. I have had the Air Max, which is basically a bull boss with a bottle, on my wish list for quite some time. We'll have to see how it goes as far as funding. If I do get it though I'll be sure to break it down and share my findings or any mods

[@rickrazz7136]

@@brothersinair2064 yeah looking at my first Bullpup. My wish list has about a dozen pups (no fx or daystate). There's some awesome stuff out there but my heart belongs to Hatsan first. I really like shooting a lot of different pellets so I'd like to have something externally adjustable (hammer, valve, & reg).

[@shawndubay4050]

@@rickrazz7136 the bullboss is a great little rifle. I have one in. 22 and is my thirty to fifty yards hunter for pesting around the farm. It will very efficiently drop an adult groundhog where he stands at forty yards with a head shot no problem. Also if you are wanting to plink around or sharpen your shooting skills it is great for that as well. They are available in .177, 22 and .25. For bigger critters I would go with a .25 with heavy pellets.

[@seanbrossard8178]

Thanks for the quick response. And yes 10m at 500fps is just pure physics. And all can be calculate even out to 100m if you know the air resistance per meter subjected on the aerodynamics on the pellet And there is sorting of the pellet by size and weight. It just felt as if you should have made two videos as i spent 36min with information but that not what i searched for. I bought a Vectis 25cal and the Flash share the same platform for tuning and a regulator install. Now the video on the regulator tuning was very informative. I am sure you get that your time is sometimes better spent. I thank you for your hard work in putting out an informative video. What makes it hard for me is the lack of editing in general on utube,miss labling or just trying to cover to much material at one time. Like your video which 59mins and should have been 5- 10mins for the subject matter. I know it is difficult to try to cover a how to video for 3rd graders to engineers( like myself) with covering safety as well in that time. I try not to open dyi videos over 20mins. Just for this reason. You spent more time talking about something other that the listed subject. Just some feed back to ponder. I hope it doesn't detour your continued informative videos but hepls you to enhance.

[@brothersinair2064]

Yeah I appreciate the constructive criticism for sure. It has been a learning curve for me to be honest. Based on emails I was getting from a couple guys before I started the channel I thought mostly young guys maybe even teens would use the information so I kind of tailored a lot of it towards that age group only to find that very few young guys are in the comments. Seems to mostly be adult air gunners with experience and I was failing to realize that. I'm moving forward with a new approach to things more along the lines of just banging the info out and helping a guy that needs more help/detail in the comments or through email or something. Now that I realize the audience and also come to terms with the fact I would never want to watch an hour long video about some of these topics LOL, I think guys will enjoy the content more moving forward. Also.... based on the wording of your first comment I assumed you were a young guy new to air gunning and maybe not very fluent in English. I apologize and again thank you for the feedback. Cheers friend

[@daviddodson3807]

I'm reposting my comment, said you couldn't see it all. Could be that I was using another account so I switched to this one. I originally posted as PilotMountainAirgunner, something went wrong, I can only see that comment when I am logged into that account as well, hmmmm. Anyway... Glad to see you back. Yeah, the .25 cal FlashPup can definitely shoot hot. Told you I was going to try slugs, and I have, got the 44 gr to shoot up to 80 fpe. Tried four slugs and it has the power to push them, but accuracy suffers due to a humongous spread. So yeah, great for close up, but not at a distance. Still learning and playing with mine. I ran a video shooting the 34.7 gr NSA slugs hooting 74.4 fpe, I have the chrony numbers for the other four slugs. Most don't believe it, but I ran the numbers in different lighting etc. This thing is hot as fire, up to 1200 fps with the 25.39 gr jsb. I just wanted to see what it could do, new to tuning so of course I wanna see what it could do, lol. I simply cleaned, deburred, buffed, used a tiny touch of silicone for a super thin lube, cranked the hammer screw out 6 turns and left the end cap one turn out from where it was, and I am amazed at the power this thing has, never would have dreamed it. I'll turn it back down, but amazed at it's power. I did find the 39 grainer kept a decent shot spread, slow, but pretty good.

[@skipcampbell239]

you are so right tuning is tuning speed is just one equation.

[@neilwoodgate8898]

Appreciate the Videos. Only reason I bought a FlashPup S........ Only Downfall so far is the grittyness of the Bolt. I've cleaned and dropped oil on her a d still. Hopefully its a Breakin process. I'm looking forward to watching more your videos. Thanks again for the info and having me spend my money. Lol

[@brothersinair2064]

My pleasure bro. The bolt will definitely loosen up over time. Some polishing will smoth it up but just using will break it in nice after awhile

[@crawford323]

I learned something today. Thanks

[@JetPilot747]

Thank you for your efforts and help. God bless and stay safe.

[@paulmalec6251]

Very very good information

[@skipcampbell239]

im thinking of buying a flash pup you sure helped me thank you!

[@brothersinair2064]

No problem. I enjoy sharing. It's a really great gun for $400. It knocks my pos guantlet in the dirt!

[@bertbccfu9564]

Just so you know you can get a great deal through Hatsan USA ,look in the refurb section I bought both of my hatsans through refurb , also bought a spark compressor all three were in their original packaging in the original Plastics, it didn't look like they had even been out of the box, I picked up a flashpup synthetic 25 for $249 killa deal if you ask me on a great gun, most every time you go on the refurb section it says out of stock, all you do is put your email address in and they notify you as soon as one comes in ,but once you see the email though jump on it because they sell fast, I missed out on the first one when I was filling out the form someone already had bought it , I would definitely buy a refurb gun again on hatsan usa , ive gotten fantastic deals

[@luisfernandorivas1798]

Excelente video me acabas de solucionar muchos problemas con mi rifle

[@rashidabdul-salaam9090]

After you regulated your Pup, what were your velocities on the first ten shots on a full 200 bar fill? I’m wondering if it’s possible to have a completely full fill and depend upon the accuracy of the first ten shots. Thanks in advance my friend

[@tommanfs6843]

I am late to the party lol i just got a hatsan flash in wood (177) and its shooting too fast for average pellets .... my groups are just ok .....i need to slow it down to see if i can tighten them up ...... this video is great thank you. stay safe and happy shootin!

[@noelnana2059]

hi tom, im late for the party too 😄 and i got the same flashpup wood .177... accuracy, consistency, and grouping are more than satisfactory for me... my issue is on the bolt lever action... ... cocking is so heavy and really takes a lot of effort... would you have any advice or suggestion for me? thanks...

[@jasonbaldwin1915]

Great info

[@ranhat2]

Best stage set on youtube for this sort of subject. 1. Great finding that velocity reductions might result in improvements in accuracy. 2. Consider adding a numbered/bullet-dots format list for viewers to save time--some viewers need only one bit of information.

[@brothersinair2064]

I feel you. Originally as you will see in the about section I started the channel for a very small group of young guys that couldn't change their own oil if you asked them to( no offense guys). On top of having absolutely no mechanical skill or confidence these particular young guys all had the flashpup as their first air gun ever. One of them was 16 years old and it was because of this I was incredibly scared of someone getting hurt or ruining their gun. To be honest with you I never expected anyone to really watch the videos besides them LOL. I'm with you I would never want to sit painfully through any of those long-ass videos and I realize now that this audience I have gained mostly consist of adult air gunners with at least some experience. From this point on I will be taking a different approach and just shooting the information out there so the average video shouldn't really exceed 20 minutes. I'll be able to actually make a lot of videos that I want to because the editing will be short and sweet so I don't know why I didn't change things sooner. I thank you for the comments on the background. To be quite honest with you I never set it up for KZbin or to be a background to make a video it's just my man cave and my little air gun shop where I hang out and do my thing LOL the walls were so drab so I went with the camouflage then everything was too plain so I started hanging shit everywhere and then it just kind of evolved into what it is now. But again man thanks for the compliments and you hit the nail on the head with your criticism. Look to see the videos to be short and to-the-point moving forwards. Cheers

[@ranhat2]

@@brothersinair2064 Wow! You are replying to comments! Great, really good of you. You know, you never really gave the 1-2-3 of how the gun operates. Finally you do adjust the power--first higher, and then a bit lower. How many turns (clockwise, right?) can the adjustment go, lowering pressure? If not enough, I have to return this powerhouse Flash Pup. It is too powerful and NOISY BIGTIME to use hereabouts. If powered-down (even 600-700 fps in .177 would be fine!), all should be fine. *Is it that the gun is fired by a hammer hitting an air-release plunger? How low can the gun go in FPS (espec. interested in .177)? Thanks.

[@brothersinair2064]

@@ranhat2 as I stated all the questions you have can be found with a Google search on how does a pcp airgun work. I will do my best to make it a little easier on you and give you the short answer. They are all basically the same just accomplished slightly different ways from gun to gun. There is an air tank to hold the high pressure air. At the end of this tank there is a bash style valve holding the air from escaping out of the tank. Just like it sounds the pin of the valve must be bashed (struck) buy something in order to open the valve and release a given amount of air. This is accomplished in a PCP airgun buy something commonly referred to as a hammer. It is usually made of metal and it is driven buy a spring known as a hammer spring. The hammer is pulled back buy a bolt style action and then locked in place by the trigger mechanism so that when you pull the trigger the hammer is released and it moves forward to strike the valve releasing air to drive a projectile out the barrel. I did my best to completely step-by-step describe how to make a power adjustment on the gun. There's no reason to say how many turns or any of that jazz if you think the gun is shooting too fast and loud turn the adjustment screw clockwise to relieve some pressure from the spring. This is completely described in the video. So if we lessen preload tension on the hammer spring the hammer is going to strike the valve with less force and the result of that will be less are being released by the valve then the previous setting. If you don't have a chronograph then there's no way for you to know anything in relation to the feet per second of your projectile. if you do great it's a very useful tool in knowing the speed your gun is shooting a given projectile and also will show you what is happening in relation to your hammer spring adjustments. If I showed you how to increase the tension and I showed you how to decrease the tension and I also explained the end result of those adjustments I don't know what else you're looking for. if the gun is shooting too loud and the pellet is going too fast relieve the tension on the hammer spring and see if that quiets it down for you. Clockwise relieves tension and counterclockwise increases the preload tension. All you can do is turn the adjustment screw in as far clockwise as it will go and then that's it what you're left with is going to be as quiet as the gun will be and the pellets are going to be moving as slow as they possibly can. If that doesn't suit you you would have to look for a lighter hammer spring so that you could strike the valve with even less energy. Outside of this reply in combination to the video I don't know of any other way to help you along in this process.

[@brothersinair2064]

@@ranhat2 alternatively you could try a moderator. The .177 shouldn't sound louder than someone smacking a magazine down onto a table with a Donny FL.

[@TJ-hd5ym]

right on bro great vid

[@brothersinair2064]

Thanks!

[@Jlitnin01]

Great video. This was so helpful. Until recently, I felt the same as you used to feel, finding the idea of dropping power to be a tough pill to swallow. But if you think about it, a lot of countries limit the legal ft. lbs. to 12, and they shoot long distance accurately with 12 ft. lbs. and they take small game easily with 12 ft. lbs. so our detuned guns are still power houses. Thanks for all your great videos.

[@brothersinair2064]

Thanks Johnny! As always.... My pleasure!

[@mikegorecki4481]

Excellent

[@oneshotonekillthatsthedeal]

Hello i want to ask you a question about my hatsan flash 101 ,when the cocking lever is in place and the gun is not loaded you can hear something sliding back and forth inside when you level the gun accordingly ,but if the cocking lever is halfway to loading the sound is gone same for when the gun is loaded and ready to shoot,could this be the spring of the cocking lever or something on the inside

[@__.559.__]

Thanks again tuned the ol flash

[@brothersinair2064]

That's great you're welcome👍

[@jasonbaldwin1915]

I think u would love the seneca aspen .25... also own a nova freedom 22... both have a built in pump... u just need to remember to oil it... awsome triggers.. cocking lever is smooth... accuracy is sweet... better than my hatsan flashpup .22... u should maybe try one... great review bud.. truely sweet

[@jasonbaldwin1915]

I totally agree... I live in Wisconsin also... love my pcp squirrel hunting... head shots only

[@rickrazz7136]

Man you inspired me! I did my first tune ever because of the easy instructions and confidence you gave me (Hatsan Flash carbine .25). If you look at the following data you'll see I should have continued the first (stock) string...I stopped to soon. The only thing I noticed strange from the second string was only 14 good shots (within 25 ES) and the last seven where the most accurate (at 33 yards). I cant wait to stretch this thing out to 50 & 70 yards. Seems like a good tune to you? Blessings from MI. Hatsan Flash/Polymags 26.0 gr, before tune 1. 727 30.05. 180 bar 2. 757 33.11 3. 769 34.2 4. 777 34.8 5. 778 35. 160 bar 6. 778 35 7. 780 35.1 8. 782 35.3 9. 773 34.5. 150 bar 10. 781 35.2 11. 781 35.2 12. 775 34.6 13. 777 34..8 Hatsan Flash/JSB 25.39 after tune 1. 828 38.7 2. 828 38.7 3. 832 39 160 bar 4. 828 38.7 5. 825 38.4 6. 825. 38.4 7. 822 38.1 8. 825 38.4 9. 823 38.2 10. 814 37.4 150 bar 11. 816 37.6 12. 810 37.0 13. 806 36.6 14. 803 36.4 15. 797 35.8

[@brothersinair2064]

You're definitely in the right direction brother. It looks like on the after tune string that you started with a 180 bar fill? By the looks of the shot string you are beginning shooting at the peak of the power curve were the most consistent shots would be. That would mean that there are several shots that would have came before those within your desired es of your 828fps max. Try reducing the preload a quarter turn at a time and shooting over the crony from a 200bar fill. You are very close to having a shot string like this example... 765 200bar 771 783 791 800 170bar 801 809 814 817 824 827 825 827 826 155bar 825 827 823 821 823 815 809 801 145bar So as you can see from this completely hypothetical example there are 18shots from 170bar-145bar with an ES of 27fps. 12 of those 18 shots, say from 165bar-150bar, could land subMOA at 100yds based on the 10fps es of said shots. Once you're set where you want to be and know where the most consistent velocities are through the peak of your power curve you would then zero your gun while shooting those consistent shots. So from where you are at now the more you minimize preload tension on the hammer spring the longer and flatter that curve will be having more shots with less es but at the cost of max velocity at the peak dropping proportionate to the softer hammer strike. Tuning cost time and pellets($) but for me it is a labor of love and the end result super gratifying when you have tailored your gun to suit your needs and brought about much improvement. Hope that helps you out bro. I'm super happy when somebody actually finds the videos useful and it allows them to further their airgun game. Happy shooting brother!

[@rickrazz7136]

@@brothersinair2064 thanks Chad your videos are certainly useful. I will try your suggestions out. Strang thing happened when I tried the polymags after the tune. The fps was 25fps slower, and went down from there, compared to the JSB Kings. While the polymags are 26 gr vs 25.39 (just .61 gr difference) I was surprised at the big difference.

[@benolson8366]

Newby question - when you're turning the spring tension adjusting screw - how long is your 4 mm allen key? How deep is that screw? plus - the end cap is so tight - how much torque can I put on it? Thanks

[@aquaticlizard]

Awesome video man. Love your help and dedication to all the air guners out there. I have a 1.77 hatsan pushpup and I would like to crank the power up as much I can. I do have an air leak which I will sort out before making the adjustments. It says the hatsan flashpup can go up to 30 joules in 1.77, here in Portugal they aren't allowed to pass 24 joules. If I adjust the hammer enough could it be set to its 30 joule standard? A warm hug to you amigo!

[@aquaticlizard]

*hatsan flashpup not pushpup 🤣

[@rmoreno6014]

I was adjusting and running my flashpup, turning it counterclockwise to turn up the velocity just a little, following your instructions, but now it fires so weak it wont shoot anymore. Did I do something wrong? I never fired the gun without tightening the set screw gently. Can you help? I'm so confused. Is it the sear?

[@jkurkoski]

Thank you for another great video and sharing your experience and knowledge! Didn't you put a regulator on the gun?

[@brothersinair2064]

Thank you, It's my pleasure!

[@brothersinair2064]

Almost forgot to answer your question.... yes I did install a HUMA regulator but it isn't in the gun now. It only takes me about 6-7mins to pull it out and get the reservoir back together and on the gun. The regulator has to come all the way out in order to adjust the bar setting so I've done it many times over the course of tuning with the reg. I wanted to clean the spring washers ect.... and also going to make a video showing how to install the regulator.

[@alicesmoot4191]

Man I trust you. Could you tune up my husband pcp flashpup 25 cal black. Just anything you can do to make it faster. I don’t have a lot of money due to being affected by the COVID-19. I will pay. He’s been through a lot and just got out the hospital. I’d love to surprise him. Well thanks so much. We enjoy your show. Thanks

[@ummarbhutta]

Hi, I am using P15, point 22, and I am getting 750fps with 18.13gr JSB, I want to get higher velocity in range of 870fps, but setting hammer spring to even highest tension don't change anything. What could be reason?

[@krustyoldsmoker7997]

good morning sir well I did my trigger naturally when I get back to screws out of the nylon it's stripped the screw number two so I took it apart went from a 3 mil did 3.5 then wrapped it thread tape works perfect I sure learned the trigger and it is set wow a drop Loctite flexible thread lock on top of the screw number 1 to number 2 hold in place I love you videos Brothers in air I'm going to adjust the pressure today with the chronograph I'll let you know thanks for all the info have a good shooting day bang bang bang

[@brothersinair2064]

Awesome! Nice fix on the stripped screw. I'm glad the videos are helpful to you and you dig them. Mostly the comments I've gotten over the last couple months are from more advanced air gunners that want to disrespect me and talk shit. "Vids are too long", "you talk way too much", ect... So it's nice to hear from you and know I've helped. Just yesterday a guy asked me "have you been smoking ice? You take way too long to get to the point". I mean shit I might throw on some rebel country and burn one here and there but fucking ice lmao? Happy shootin brother

[@julesgardet659]

Lots of great info... Thanks! Could you give us the ideal set up for some specific pellets at some predetermined distances in hunting situations? Probably I’m asking for too much, but it is your fault : Nobody knows more than you about the FlashPup !

[@toninig]

What is your recommendation for the jsb king 25.39 hammer spring adjustment to achieve your numbers ?

[@williamczupryn2642]

Just ordered a chronograph. Should I make my hammer spring adjustments at the beginning of my power curve? Looking for more consistency in my .25 synthetic. What FPS would you suggest? In my sweet spot that is. Thank you. Hope your feeling better. Glad your back at it. Wanna dust ‘em off like you did.👊

[@bertbccfu9564]

It seems almost every gun can be a little different but on my flashpup synthetic 25 my sweet spot is right at 2750-2800 down to 1450 when my curve starts to nose dive

[@j757under]

Is there an available chart for FPS hammer spring adjustments, from highest to lowest settings?

[@robstanisic6615]

Enjoyed the video. Maybe I'll try the JSB pellets. Currently using barracuda hunter xtreme 28.14 grn.

[@brothersinair2064]

Thanks brother. The JSB perform more accurately for me in all my guns. Able to shave like a quarter inch off the groups as opposed to the H&N

[@johnnybarbar7435]

What you are doing by tuning is creating lower bore pressure at the time of the pellet exiting the muzzle which greatly reduces the chance of turbulence tilting the pellet slightly off axis.

[@brothersinair2064]

My thoughts exactly. Well said

[@vulpe-wm7xu]

How to adjust the velocity on Hatsan AT-P2 QE ? (Hammer Spring Tension Adjustment) Please let me know, Thanks.

[@toninig]

How many turns with the jsb kings left you happy and what fps did it acheive

[@leksavepsalainen5571]

Hi! I have flashpup 22,proplem is there is no power in it,hammer spring did not do anything to my velocity ?it is new gun..power is max 700ft. Any help would be nice!

[@brothersinair2064]

Check the breech seal. It's probably missing or badly damaged. 700fps is right around the speed you would get without one or with one damaged and not sealing.

[@buckfifty3470]

Accuracy is king, man. That Flashpup spring adjustment is so much easier to get to than the Blitz it's not even funny.

[@ariamaguila8549]

What I don't understand is that if you turn the hammer spring screw clockwise you are increasing tension instead of releasing it. Correct me if i am wrong please

[@kevinyoung9034]

Brothers in Air, I'd like your thoughts on performing hammer spring adjustments in the "sweet spot" or the power curve of the air cylinder. On mine (.22 cal) its around the 150Bar range. My thinking is that the sweet spot gives you the most consistency shot to shot. Therefor the most precise readings when adjusting/measuring your velocity changes.

[@brothersinair2064]

You are absolutely correct about the most consistent shots being in the power curve. So if I say my flashpup is shooting a JSb King at 825fps I am referring to the peak velocities that are consistent within the power curve. I would make hammer spring adjustment while in that curve to get close to my desired velocity, then filll the gun and shoot a whole string to see where I'm at. It's the only way to truly know how effective your adjustment is or what you've accomplished. you change the point of consistent balance when you make adjustments to the hammer spring. So with a fairly hard hammer strike your power curve might be between 180bar - 155bar. Whereas with a much softer hammerstrike your power curve might be between 160bar - 135bar.

[@joecamel2236]

You are the man! Could you please tell me how many turns out from all the way in you have your hs on your flashpup? I just got mine and trying to tune it. Watched airgunners Edge video but he has his shimmed so it will not be the same. I watched all your videos multiple times , I also live in Wisconsin( green bay) go pack go! Just got back from Harbor Freight with the feeler gauges to shim my scope mount :-)

[@brothersinair2064]

Let me know what pellet you're using and what grain weight. Also your desired velocity at the peak of your power curve. If I have some around I'll pull the reg and find out real quick where the hs should be turned out to for where your trying to get. Won't be exact as there is some variance between guns but it will get you real close.

[@joecamel2236]

You definitely don't have to take your gun all apart, I thought maybe you knew how many turns you had yours to achieve your 830ish, thanx though. I think I got it figured out after going through a couple of tins of pellets. Using the same pellets you are jsb 25.3 grain. Now getting about 810 fps at Peak of power curve. What I didn't anticipate is how much louder it would be. And just couldn't find any definite information on it thank you. We would love to see that regulator install video. :-) U r a great help

[@Colt3854]

If you are screwing the allen key counter clockwise are you not putting less tension on the hammer spring. When you screw it clockwise it moves forward to compress the spring more.

[@brothersinair2064]

that would be the case if the adjustment screw was at the rear of the hammer spring like many guns but it sits inside the hammer in front of the hammer spring. So if you turn it clockwise you are driving it deeper into the hammer and lessening preload tension but counterclockwise brings it out which compresses the spring towards the end cap adding more tension.

[@williamczupryn2642]

Hey bud! Gotta golf ball shooting contest coming up next Saturday. 50 yds 8 shots. Doing a lot of practicing lately looking to gain more consistency with my flashpup. Would deeply appreciate any advise. Would it benifit me to shoot at lower pressure? Shooting between 200 and 150. Thanks brother.

[@brothersinair2064]

Sounds super fun! Here's what I would do.... Reduce the size like 30% from a full sized golf ball and practice at 50yds or, use the full sized golf ball but put it out at 60yds and practice that way. Then come tournament time you'll have more control, stability, and be more than ready for 50yrd. Will the shooting be offhand or from the bench? So many things can influence the shot but the biggest in mho is your breathing. If you can master that and shoot consistently each time you'll knock heads at the tournament. Although a PCP is more forgiving than say a break barrel it still does have recoil so if you practice a consistent hold on the gun it will become second nature and you'll feel immediately if your hold is off. As to the pressures you should use that depends on a few things. If you have a chronograph you can easily shoot from 200 on down and record the data so you can see where your power curve is at. You would want to use the most consistent velocities at the peak of your curve for the tournament. If you don't have a chrony just put out a target at 50 and shoot benchrested from 200 on down using the same point of aim for all your shots. You will notice they start low at the beginning of the string and rise as you are going uphill on the beginning of the power curve. When you reach the peak of the power curve and are shooting through your most consistent shots you will notice the point of impact staying the same. these are the shots you want to use at the tournament as they are when the valve is at its most balanced point and you are producing your most consistent velocities from shot to shot. As you keep shooting you will notice the shots begin to drop again as you enter and go down the down slope of the power curve. Keep an eye on the manometer as you shoot to see at what pressures the peak of your power curve falls into. As an example you might get 15 shots with an extreme spread of 20 FPS between 160bar-145bar. These would be the shots you would want to use as they have the most consistent velocities through the course of shooting your fill. Hope that helps brother. Good luck at the tournament. Kick ass and take names!

[@rickrazz7136]

Thanks Chad, Is the tuning process the same for the Flash and the Flashpup? I understand they are the same mechanistically?

[@brothersinair2064]

Yup same deal across the platform. Flash(wood)(pup) all the same procedures. You're very welcome bro be safe and have fun👍

[@johnaverick7468]

If you have a home made tune that produces bragable FPE you are a good machanic. If you have a home made tune that produces super duper accuracy then you are an Artist .

[@brothersinair2064]

That's a great way of looking at it. 👍

[@bertbccfu9564]

Exactly and if you can #1 achieve super accuracy, #2 super consistency and # 3super ft lbs. Then youve got it all And most times with most every gun if you stick to it Keep on testing and tuning it can de done

[@moosemoosepower]

So I’ve been hunting around on your channel, gathering as much info as I can but are there any other resources I you would suggest? I’m pretty new to airgun community. Pretty much greenhorn to shooting too.

[@bertbccfu9564]

Forums are great also like i enjoy and find a lot of good info and cool people on GTA gateway to airguns forum, another great source of info is the Hatsan group on Facebook, also you can do a search on fb for airgun groups or specific groups related to your model ,

[@drazenhusek]

Hey man, I bought this gun in 0.25 calibre. It is stated that it is 17J and I feel that it is too weak. While shooting a 1 inch pine board, the pelletes barely pierce the board. I wil try your suggestion, but I don't have any velosity mesuring tool. Can I acidentaly over-screw it or does it have any safety system? When I screw it, could it become so power full that it will destroy the bolting system?

[@brothersinair2064]

No you won't destroy anything within the action. You can turn the hammer spring adjustment screw counter clockwise to increase the preload and achieve a harder hammer strike. When adjusting counter clockwise you will reach a point where the hammer spring is at max bind and you cannot pull the bolt enough to the rear to get the trigger sears to engage. If you reach that place just turn the adjustment screw in clockwise and relieve preload tension until you're able to fully cock the action. Always remember to tighten back down the little set screw in the side of the hammer after each adjustment. Good luck bro. Have fun

[@brothersinair2064]

I would turn it up some but not max it out. Better to run things under absolute max power than push all the components to the limit. It will limit the wear and tear on the rifles components by keeping things slightly below max. Hope that helps and you can get some good penetration going on that pine!

[@drazenhusek]

@@brothersinair2064 Thank man i will try it and get back to you. Chears from Croatia 😊

[@HunteR45562]

hey what size rail is on the pup

[@MrRyanmcmahon]

HI, Just got my first PCP, Flash pup QE 25 cal. With your experience, what to feel is the best pellet for tight groupings at around 30 yards? Tks. Im looking at some type of JsB's

[@brothersinair2064]

In my experience both the 25.39gr and 33.95gr JSB's group the best in both my .25's. The JSB Hades group pellet on pellet @ 30yds if you're hunting/pesting.

[@MrRyanmcmahon]

@@brothersinair2064 Your awesome thank you sir..

[@ppmaks668]

does the non FAC have the same adjustment system?

[@psycodata]

I have the flash pup synthetic stock (in .22) and I drilled a hole in the butt pad that lines up with the hammer spring tensioning screw so that I don't have to take the gun apart to adjust the hammer spring I just use a Long Long Allen wrench... hatsan should do this mod to all their guns because it makes tuning easy-peezy. Just loosen the bolt grub screw ..stick in your 8" long Allen wrench...watch your chrono and start turning

[@ziadkadi]

What about the valve spring do you mess with that?

[@fedayeentaqx9956]

If there are any left hand shooters out there who are annoyed by the unaccomidating cheek comb, heres a fix: Take it off, and put a 4 in. long, 1 in. tall riser rail, on the combo rail under the cheek comb, (or monstum makes an adjustable height one that will give more adjustability), and then get a pack of Magpul XTM rail cover/hand guards, and clip one in the middle, and one on each end (they will only fit halfway on the ends of the rail but the clip on design makes the fit on securely, extending halfway over the ends of the rail). The rail cover will extend over the magazine on the Flashpup with a perfect fit, so the mag is held solidly with no wobbling when pushed in, and protected by the rugged construction of the Magpul rail cover panel. Now I have a comfortable cheek weld, just level with my rail, and it can be comfortably shot by left or right handers.

[@fedayeentaqx9956]

i should have mentioned that if you are using the stock optics rail you will want a half inch riser, 1 inch will be too high for irons if you mount them on the stock combo rail, i have a mil spec picatinny rail adapter as not all picatinnty accesories will fit the groove depth and spacing of the combo weaver rail, which adds a half inch of hight to my optics rail

[@jrh362]

Sorry (chad),thanks for the advice, so I ended up purchasing the hatsan flashpup synthetic. 25 today this thing is an absolute monster, it shot completely through my backstop wich was several 2x4 boards side by side, wow,thanks chad,ill be looking for some more advice from you I'm sure thanks again

[@brothersinair2064]

You are right it's a monster. There's really nothing else out in that price range pushing as many ft.lbs. sounds like you're already having an awesome time LOL happy shooting bro

[@jrh362]

Hey Chad I need a piece of advice, I'm not to sure what the hammer spring comes set from the factory but I need to know how to make the adjustment on the synthetic flashpup for a tad more power and what is a good setting

[@jrh362]

Also is it ok to drop a little silicone oil on my bolt slide cause it's a little gritty when engaging it

[@brothersinair2064]

@@jrh362 I can't remember for certain what the original setting is but I know it is either 3 1/2 or 4 turns out from zero out of the box for the .25cal. I would say if you're looking for a little more power just turn the adjustment screw 1/2 turn counter-clockwise and that will increase your strike quite a bit. It's a very stiff hammer spring so a little goes a long way.

[@brothersinair2064]

@@jrh362 yeah it certainly won't hurt anything. I prefer to clean all the grease and oil out of the action and use dry graphite as the lubricant. This has been the smoothest all weather tune I can come up with and it doesn't attract or hold the dust and dirt. I know many people that prefer to use oil so it's really just a matter of personal preference. After a few hundred shots you should notice it start to smooth out a bit as everything wears and breaks in.✌

[@bobbennett790]

As you know I just got the Hatsan flash QE .25 seams like the same gun for the most part. Came with a Paper stating, 10 yard group within Hatasan specks and 860 fps no ammo brand or grain weight. GRRR You may have said, but I do not recall. Sometimes written in black and white works best for me, what pellets have worked the best for you? Thanks again for all of your fine work. ( right now i have the H&N Grizzly 31 grain and H&n Baracuda hunter 27.47 grain

[@brothersinair2064]

Yeah it would be the same gun basically outside of some trigger stuff. Our barrels are the same and came off the same production line so what works in mine should work in yours theoretically. I tested loads of different pellets and found the jsb 25.39gr and 33.95gr to be the most accurate. The air arms pellets pretty much match their accuracy as well.

[@brothersinair2064]

of the manufacturer's I've dealt with Hatsan velocity claims in my experience are the closest to being true. They probably used a Hatsan Vortex 19gr pellet which is what Hatsan uses for their velocity testing on the .25's so you should see around 820-830 ish velocities with a 25gr pellet with the factory tune.

[@bobbennett790]

@@brothersinair2064 huh really right where you said that your sweet spot is . weird

[@brothersinair2064]

@@bobbennett790 that's just the sweet spot for that particular pellet. that particular grain weight. My rifle came in tuned hot and was shooting a 25 grain pellet at about 860-870. I had to tune the gun down to get 820's. I was only trying to give you an idea of where you might come in at in regards to your gun and the stats you received. Some people get their gun and it's shooting a 25 grain pellet at 800. We would like to think every gun leaves the factory with an identical tune shooting identical velocities but that's just not the case with mass manufacturing. No matter what velocities you end up with on yours from the factory I'm sure you'll be pleased with the accuracy and find what works for you.

[@bobbennett790]

@@brothersinair2064 Yes for sure . I want to hunt with it so I'm going to try to get a happy medium between accuracy and velocity. from the looks of your videos that should be hours of fun alone. LOL

[@kendawg758]

Just ordered one of these I was wondering if it could shoot the .253 slugs

[@LoneWOLF-ku7mf]

depends on what grain, I have a Condor in 25 cal & I can shoot 251 but limited up to around 40 gr but my Condor has a lot more power than the Flash.

[@seanbrossard8178]

If you have a choked barrel not a good idea to shoot slugs. Hatsan guns currently have choked barrels.

[@PeakyBlinder]

I made my own spring and made the valve strike pin longer .

[@julesgardet659]

How many useful shots and what range of speeds you get as the rifle comes from factory, at 200 psi?

[@brothersinair2064]

As far as useful shots that depends on the Range you are shooting at. If you were shooting at 10yds you could probably pull off 40shots. stretch it out to 50yds you would be looking at more like 20- 25 shots with an es of like 20-25 fps. Factory tune will have a 25.39gr jsb moving anywhere from 810fps - 835fps but those are just rough estimations based on mine and others reports.

[@brothersinair2064]

As to your earlier question about the speeds being good enough for hunting.... it all depends on what you are hunting for. Anything small game is definitely toast as you're looking at about 27ftlbs of energy @ 100yds when leaving the muzzle at 700 FPS with a 34gr slug

[@crawford323]

Do airgun pellet designers use ballistic coefficient data to design their bullets? The shapes seem so different form the philosophy of that of the powder people. It is known from the pistol Olympic gang that the .22 short subsonic rounds are more accurate than .22 long rifle which can go in and out of the sonic range which affects accuracy.

[@LoneWOLF-ku7mf]

I have a question by increasing your velocity do you still get the problem of it firing when you let the cocking lever go??? I am to get my Pup this Saturday & if this is an issue with it auto firing I want to correct this problem. Also, I hope to use the 31 gr Grizzly as for i will be using for Iguanas. or may try the 26 gr Poly mags.

[@brothersinair2064]

An increase in hammer spring tension should not affect things of that nature if the components are functioning properly. If you are speaking on what I have seen reported that with the bolt in the rear locked position when flipping it up will fly forward and the hammer will release and an accidental fire will occur. Of the two I own and the few others I've had my hands on I could not replicate that situation. There is a return spring around the pellet probe to stop it from traveling all the way to the end of the channel in the hammer but I would imagine if the spring is fatigued or faulty that could possibly occur. A stiffer spring would probably remedy the problem. Also if the trigger is set too light the jolt and jar from the bolt handle flipping up and flying forward may be enough impact/vibration (it's going to smack into the trigger sear) to cause the hammer to not grab and keep flying forward. The only other way I know of this happening is... if you cock the gun like 1/2 - 3/4 of the way and the bolt handle slips out of your fingers before the hammer is locked in place by the sear the hammer will fly forward with the probe and strike the valve. Even my lever action is this way. If the lever is not fully pulled back to lock the hammer in place with the trigger sear and it slips out of your fingers... same thing the hammer goes forward and strikes the valve. There's really no way around this as it is part of the design of these types of PCP's. I've never had this happen to me over years of shooting though. I'll use my compound bow as an example.... If I knock an arrow and am 1/2 - 3/4 through the pull and the string slips from my fingers there goes that arrow in whatever direction I was pointing the bow when the accidental slip occurred. The only way I know of to avoid the problem is to not let it slip from your grasp while charging the gun. Sorry so long-winded I figured I'd cover all the bases because I didn't know exactly what scenario you were talking about. The .25cal Flashpup shoots heavier pellets very well and overall it's not very picky. You should do awesome with those out to 60 yards but I would look for something with slightly better ballistics if you're trying to stretch it out farther. Speaking from experience, I've done a lot of hunting with both of those and the polymags do some real damage. The grizzlies seem to be a little too hard to get much of a mushrooming effect as they will just pass through bone and all. If the grizzlies were just a touch longer and made of a softer lead with a cupped base they would probably be my go-to. I've had really great success using the Hunter extreme 28.24gr out to 70 yards and the expansion on the pellets is almost bar none. I've been using the new jsb Hades in .22cal and they take the cake as far as range capabilities with those types of pellets. The expansion of the pellet and the extremely damaging wound channel they produce is remarkable. We should start to see the new 25cal Hades hit the shelves real soon and I'm excited! Although pricey I do find the jsb pellets to be the best overall as far as consistency in gr weight and level of handling/shipping damage. Now if I could just get them cheaper lol. On another note I sure would love to go on an iguana hunt! Best wishes on all your airgun adventures brother.

[@LoneWOLF-ku7mf]

@@brothersinair2064 It won't be till next year before I will be able to go I had sold my truck & got stiffed out of $ 500 bucks. I have been busy with taking care of some personal things in the family & don't expect to get things done till around this time next year. Save up some cash & you can ride down with me just leave your car at my place. I want to try to stay close to a week depending on how things go, got several Iguana hunters wanting me to come down & I am sure you would be welcomed also. Keep in touch. I will be doing a crony test on my Flash tomorrow if it doesn't get here too late, then find out what pellets she likes, I have 1,200 rounds of the 33.95 but that is mostly for my Condor but if it likes them I will buy 8 more tins of them so should have plenty to take out some Iguanas.

[@LoneWOLF-ku7mf]

@@brothersinair2064 by the way i have 3 tins of the hunter extremes. Will give them a try. Thanks again

[@brothersinair2064]

@@LoneWOLF-ku7mf sounds like you're fully stocked!

[@fedayeentaqx9956]

To make the FlashPup velocity adjustable without removing from stock: (I left out some pertinent details of this mod in my original comment, so this is the complete step by step) 1. Take the Flashpup out of the stock 2. Unscrew the top phillips head screw in the back of the but pad. 3. Pull back on the top of the butt pad until the top peg pops loose from the hole it sits in. (might have to give it a little tug, but it has a reasonable amount of give as its plastic) 4. swivel it down using the bottom screw as its axis 5. Measuring carefully, mark a line on the side of the stock from the butt pad screw hole to the hammer spring port, (even with it) using a dry erase marker or piece of tape. 6. Using a 6mm drill bit (or something close to it, big enough to fit a 4mm hex key, small enough to not weaken or crack your stock, and to fit in the hole already there in the metal [edit: its actually hard plastic not metal] butt plate), drill a straight hole right in the top screw hole, following your line so the hole is a straight, exact line to the hammer spring port 7. Get a round wood file, and deepen, and widen, the rearmost notch, (where your bolt handle locks down in the rear position) down and forward about 3mm, to expose the set screw without having to remove the stock (its too close to the edge to drill, you will crack the wood) 8. Replace the gun in the stock, check that everything lines up as it should. Now you only need hex keys to adjust, but you will need to have a T handle one, thats long enough to reach from the hole in the butt to the hammer spring adjustment. The butt pad will stay in place without the top screw, you will have to give it a little WHACK with the palm of your hand, and the peg will snap right into place in the metal butt plate hole, and hold there firmly, until you want to open it up. Dont forget to lock the set screw back down after you adjust, I imagine it would be easy to forget with this in-the-stock adjusting, and would not be good for the gun, im pretty sure.

[@brothersinair2064]

Awesome. Great modding bro! You're enthusiasm and great ideas are refreshing!

[@fedayeentaqx9956]

Update: I found that by backing the set screw out just very slightly, it will allow the hammer spring to be adjusted without having to loosen and tighten the set screw, and it stays put at how ever many turns I set it out, even after 100+ shots. I took the wood screw that was in the top hole on the butt pad, and screwed it in about an inch down fro where it was, and now I can just stiuck my T hex key thru the top hole in the butt pad, and adjust my hammer spring without having to move the butt pad at all. Very happy about this mod.

[@brothersinair2064]

@@fedayeentaqx9956 Awesome

[@leastamongyou1111]

im trying to figure out why nomatter wich way i turn the screw my fps is dropping lol any ideas, ANYBODY???

[@leastamongyou1111]

mine is 720-740 high as i can get mine

[@korybrown121]

I have a question so is that the same with shooting slugs versus pellets

[@brothersinair2064]

I'm assuming you are talking about velocity tuning to find the best accuracy of a certain slug. I usually test a bunch of different grain weights and sizes and then take the best one and fine-tune the accuracy. If it can be dialed in to tack driving status with a particular velocity or tune then I will find that place through testing. I would say the same for slugs even more so than pellets. Every gun I have that I am shooting slugs with I had to do some velocity tuning just like the pellets. Tuning to find the right speed for that particular projectile. It's all about that stabilisation spin on the slug. This is dictated by the twist rate of the barrel and the speed at which the projectile is being shot. The faster you push a projectile the stronger the rotational spin on the projectile and vice versa for slowing it down. I have been able to tune in some great accuracy with projectiles that guy's across-the-board swore were no good in whatever gun. Pellets need less rotational spin to stabilize in flight than a slug so I would say generally in choked pellet barrels slugs are very velocity dependent as far as stable flight and great accuracy.

[@korybrown121]

BROTHERS IN AIR Thanks for getting back with me I really do appreciate that it’s nice when someone actually replies back I do have a lot of air guns just now getting into the slug thing I cannot get enough I totally agree with you and have watched everyone of your videos thank you for all the great information

[@korybrown121]

BROTHERS IN AIR I do have the flash pump and the flash both in 22 Cal I am very impressed with the pup for such somewhat of a cheap gun once you get it tuned in what a nice little pup I reallyDo you want to thank you for all the time and effort you put into your videos and your knowledge to share with others very informational surely do appreciate it

[@brothersinair2064]

@@korybrown121 it's my pleasure brother I'm glad you find the information useful that's awesome

[@korybrown121]

BROTHERS IN AIR Do you have the bulbous

[@crawford323]

Here is something out of left field for you. I am a pilot and I have dabbled in building aircraft over the years. There is a limit to how fast you are allowed by physics to spin a prop. We had a limit of a 880 feet per second on the tip speed. Much beyond that and the propeller would go super sonic and cavitate becoming inefficient. The air gets very unpredictable at that kind of speed as Chuck Yeager who we lost a couple of months ago at the age of 97, experienced. So having 880 FPS drilled into my head years ago certainly seems to have merit.

[@ramonquiroz4734]

Por facor colocar traduccion en español ya que tengo este rifle y necesito subir un poco de potencia gracias exito amigo.

[@MrDaku777]

How loud is it?

[@antj211]

You made a 10min video a hour long your killing me smalls

[@brothersinair2064]

I feel you brother. Originally the channel was started for a few guys under the age of 18 that had their first gun. So everything is over explained double mentioned and pounded into their heads. I never thought other people would watch the videos and now that the audience has grown some the videos will be a lot more cut-and-dry and designed for a slightly experienced air-gunner. Kudos on The Sandlot reference LOL

[@antj211]

@@brothersinair2064 it's all good very detailed indeed looking forward to more videos on the flashpup