How Pellets and Slugs are Stabilized | AB101 Pt.9

[@hotchihuahua1546]

You are the Einstein of pellet flight , the Airgun industry should one day give out an award for your contribution to this sport !

[@anthosugiri3730]

😂

[@HunterAnsorge-ok9jk]

You can’t contribute common sense

[@KC-dx5pf]

Ok Matt, now you’ve out done yourself! I can only imagine how much time and research this video took. I see you every year at EBR. You are the mad scientist of our sport! I also meant to thank you last year for your work, as I did very well in the sport class. I cought up with Ted and thanked him, and missed you. Without your knowledge I would not have done as well! I check your vids and listen to everything you say. Been shooting all my life and I still learn so much from you. See you in October. Thank you! Keith

[@johnnysacco100]

Matt your incredible, the amount of knowledge you bring to your subscribers shows how dedicated you are to the sport and hobby of air gunning. You never fail to amaze me, the amount of time you put in, to research and prove your theories, and then share them with us, deserves my respect. I have learned so much following you, my abilities shooting air rifles have improved noticeably. Keep it up,Cheers.

[@BryonGaskin]

Awesome..........I can't stop watching these. The most profound thing said in the air gun world in the last 10 years "build the project around the gun". Why are we limiting ourselves to 900 fps; brilliant.

[@robertlee6885]

5 Years later but.. Absolutely awesome information. Thank you.

[@the.original.throwback]

Thanks, Matt. Well done, and without scaring viewers with math monsters. I find it fascinating that a centuries old technology can still hold mysteries that, once investigated and solved, produce such amazing performance improvements. More, please! Jess

[@EarthSurferUSA]

When you want performance, math is your friend, friend. It sure beats guessing and coming up with false conclusions, but is still not immune.

[@the.original.throwback]

Couldn't agree more. Unfortunately, many people are nearly phobic about math and run the other way when it is used to explain things like ballistics, especially here in the USA. I suspect the culprit is how math is taught in our public schools, too often convincing kids that math is a foe rather than a friend. Jess

[@hendrikvanderryst3361]

Hi Matt, absolutely amazing. Simple with good illustrations for us commoners.....make South Africa proud.

[@tonyv8925]

Very informative video...66 years old and I have learned something useful today. Have been pellet gun hunting for about 60 years and did not know this...grin...now I know which pellets to use in my rifle...thank you for your work!

[@蒋炜-h1y]

I watch youtube every day. you are the best expert and make the best videos explain about airgun and airgun shooting. Greeting fron your neighbour country Zambia !

[@amadeus8006]

Hello Matt. I have also been delving into the study of air rifle ballistics for quite a while and have to agree with you on every point. That most pellets are over spun, manufacturers not knowing what they doing and the subtle importance of velocity in both spin and aerodynamically stabilized projectiles. Running many simulators and have found a few sweet spots in both designs. Slug research was very advanced in Germany in WW2 for heavy artillery. Even by today's standards. Just unfortunate there was never a crossover in tech to the smaller arms. By adapting that research into air rifle tech I think there is a lot we can gain from it. A sort of highly aerodynamically stable slug with extremely high bc. The other concept I would like to test is how accurate a completely smooth bore air rifle can be using modern tech. In the simulators I'm using, there is a relationship for springers between piston mass and barrel friction. By cutting down on friction, you can have a corresponding massive decrease in piston weight. Hoping a choke with smooth bore may offer the very low values required (or an fx barrel), and the needed velocity to make it more stable than the air rifles of old. Pellet quality a given though. Found a way to have high quality blanks made cheaply too. If you interested, it would be great to share some ideas and concepts. :)

[@jacobelliott2143]

A lot of people really don't understand the science behind it so you explaining this in depth is awesome, I myself have experimented with many different pellets for my break barrels and I've found that the 10.6 grain crosman copper magnum Diablo style pellets work best for my guns. I've used everything from gamo red fire pellets all the way to crosman hollow points and none seemed to carry very good tragectory. As for pills for pcp airguns I have yet to experience the difference as I do not own one.

[@iandixon9604]

Brilliant stuff Matt, very informative and put across in an easy to understand way. Been saying for years that everything to do with airguns has evolved except what we actually put through them. Fantastic that you are sharing your valuable knowledge on this subject with us. Keep up the great work and thank you.

[@munkytaint666]

this series is so amazing and informative, i'm going to have to watch each episode multiple times to have any chance of absorbing so much fascinating information... and i'm looking forward to each and every viewing! Thanks for all your exhaustive research and teaching, Matt!!!

[@ericaman5393]

Wow!! Despite the wealth of information out there, this is HANDS DOWN some of the most informative content I have ever seen. Kudos on a top notch informative video!!!

[@Mike-xi4zt]

Your videos are great. I have 2 years of college level Physics and a Bachelor of science Electrical engineering and at minimum, double the amount of years of experience shooting. I have seen your presentation on bullet behavior from other imaginary experts. There are no physics equations that predict any spinning object becomes OVER-STABILIZED from to much rotation, even if the center of gravity is off center. The exact opposite is predicted by actual physics. The faster any object spins the more stable and resistant to change it becomes. If it is out of balance the rotational force can exceed the outward force caused by the imbalanced center of gravity. When you sum the vectored forces the effect is not a wobbling spiral. Wobbling spirals are caused from not enough spin to properly stabilize, not to much spin. The bottom line is the faster anything spins, even out of balance the more stable it becomes. The only ways this is ever not correct, is when the speed of the bullet is fast enough to cause the bullet to be stripped by the rifling, where heat, friction, or centrifugal force causes the bullet to melt or loose its shape changing how air friction acts on the bullet during it's flight. Shooting lightweight bullets in high twist rates causing them to become over-stabilized is mythological nonsense. I have shot .224 40 grain out of a custom 1 in 6 twist and they are not over stabilized from to much spin. Spin drift is also myth.The bullet is spinning perpendicular to the direction of force that spin effects movement of the spinning object and the net force is zero, equaling zero spin drift. One would have to have the bullet spinning off perpendicular to direction of travel for spin drift to happen. And your statement about rate of spin changing during flight was off. The RPM will remain the same through flight unless friction from air acts in a way to reduce RPM. The RPM remains the same and is independent of velocity.

[@Oregon-airguns]

Deplorable Delusion haha I think this one deserves a response from the creator.

[@worstcat8489]

Great vid. I'd love to see this topic revisited where you start talking about increasing projectile weight (or decreasing it) to tune the projectile to the distance and twist of a particular gun. Projectile shape (long-slender, short-fat) and projectile weight, AND twist rate, all work together in the 'stabilization' circus.

[@cornflake73]

I didn't realize there was so much to consider when purchasing your first pellet gun. Thanks for sharing this with us.

[@gregbeeman2077]

Three years late but brilliant presentation. It's very counterintuitive coming from centerfire rifle shooting, but you explain the differences very well. What an exciting time for air rifles. There are going to be some amazing developments in the coming years. TNX

[@何坤-r3q]

First-class camera equipment and incomparable exquisite post-production, the picture effect is better than Hollywood blockbuster. Come on! 💪

[@jerryjohnsonii4181]

I absolutely enjoyed this video Sir. Your team did a great job on this episode. Your channel is the Best on explaining firearms and what they do and also bullets to. Well Done and my favorite episode.

[@leighjones5551]

Very informative, a very dynamic and complex subject. Thanks for the explanations.

[@trpe71]

Great info Matt, really love seeing the shift to slugs in the AG world!

[@jakemurphy9536]

This is the first video of yours I have watched. Highly informative and very interesting. I will be subscribing and watching more of them.

[@monkyshine5543]

Great video really makes you think about all the technology to produce an accurate airgun.

[@thomasguertin4200]

Another great vid Matt. I know that took a lot of your time to make and I appreciate that from you. You are The Man !!

[@tandtoutdoors5154]

Matt that's some fantastic info sir, thank you. I am avid powder burner hunter and use this for my hunting. I now have the info I need to better my airgun hunting adventures. Keep it up sir.

[@CreepyDan]

Thanks for this Matt, this helps explain a lot. I have been testing out some slugs in my air rifle with some pretty good results, I will have to find out what the twist rate is of the barrel. Really appreciate you and your channel, you have done so much for the airgun industry, cheers!

[@jitterox]

SOOOOO been looking forward to these videos!!!! I'm stoked they're back on the drawing board! Thanks Matt!!!!

[@kevbell5346]

Thanks for very much for this very informative series - I'm looking forward to seeing the next one.

[@JustinEthnostate]

Great video, clear and concise explanation! Much appreciated. @7:41 It is mentioned that the deep groves of a LW type barrel do not allow for the rifling to make contact with all parts of the pellet, and that the smooth-twist barrels offer a solution. Can someone explain how it achieves this if the grooves aren't as deep or stiff? At first thought it would be reasonable to assume the deep grooves cut into more of the projectile.

[@tyroneclarke1666]

Hi Matt. Your tutorial videos are so good. You always explain things very well. I’ve learnt so much and watch your videos with a lot of interest. Regards from Perth W.A. 🦘

[@ProjectAnubisUSA]

This is EXACTLY what I was looking for as I’m designing less lethal paintball projectiles. Thanks

[@neilpaul5835]

Hi matt I watched a video you made on the air arms ultimate sporter a while back and managed to purchase one secondhand with a rat works regulator fitted great rifle first time out I shot 75-80at my hft club today and achieved my personal best and top gun so very pleased with it keep up the good work Neil

[@ts2814]

very good lesson, thanks for sharing. suprised to see german axis label at 9:27 :-)

[@hadrienberthet2575]

Very very interesting.. Many things that i've thought about in the past, but never thought it would really matter to any airgunner .. You are truly a precision shooter Matt, nice to hear someone care more about deep facts than simple satisfying results

[@jerryking3208]

Thank you. My M3 is on order so I will get to use this info in the near future.

[@falconclutch4051]

Wow, I feel like the air gun industry is going through a rapid revolution with all the technology that’s being innovated. I can’t imagine where we will be in the next 10 years.

[@rodrigoilabaca9419]

Hello Matt, thanks for your very explicit videos and valuable information. I write you because I would like your opinion, I have an FX Crown cal .25 and when I did the chrony tests I gave on average 277 Mt / sg (909 fps) the output speed, using JSB Exact King .25 of 25.39 gr. I use a Mira Aztec esmerald. I use a couple of applications, Strelok and Chairgun to guide me at different distances. I did the zeroing in 50 meters and I realized that when firing at 100 meters, making the compensation that the software indicated was not accurate, with a difference of 1 or 1.5 mildot. I did tests to calculate the BC and it gave me different to the one suggested by these programs, which is based on the point of impact at 70 meters and I made the adjustments and I coincided perfectly with the mildew of the sight at any distance. Later I did chrony tests again and the exit velocity with the same pellets was 250 mts / s (820 fsp) and I recalculated the BC by the difference in speed with the first time. With all this story, help me answer: 1.- Is it normal for differences in the speed of departure in each use of the rifle week by week? 2.- Whenever one is going to use the rifle should chrony tests be done and calculate the BC? I have never done any shooting course, nor the use of airguns, I have only learned watching videos and some theory that I have read on the web. I wait your answer Thank you so much

[@peternicholls6532]

Very informative video, I had only seen Ted's Holdover video explain the importance of too much fps (850-900max if remember) can cause destabilisation of the projectile. Just getting back into airgun shooting and learning something new every day. Subscribed... :)

[@BullseyeBob]

Dang excellent video Matt.....the best production out there on this topic.

[@UtahAirguns]

Great information, Matt!

[@homieg5388]

4 years later we are seeing more options for slugs at better price hopefully it keeps going that way😁

[@сандро161]

Matt,you are a professor in pcp👍😉 and in long range. I want this job to translate mr.RusBeer. Your video with his scopecamera very good)))

[@AliBagusChannel]

Don forget Ted Holdover, he is great also

[@FlyShootTravelSleepRepeat]

thank you very much Pro for your inside ! very interesting infos and experiances of you you are sharing openly Rg Bernd

[@klrdto3250]

Wow, one of the best videos Ive seen yet on pellet motion, thank you indeed

[@jacobzachary5631]

You need to talk to some of the small bore guys and guys at Bartlien barrels about gain twist barrels. The soft lead your using would work really well for it from what I've read

[@charliecurfman8859]

From this video; to where you are now. Is total wow wow wow.

[@BobLewen]

Matt, this was another fantastic amount of solid information and explanation! Thank you! I know slugs “won’t” work in this case, but based on your shooting knowledge and research, what do you think would be the optimum accurate distance for a bench rested, standard .22 non X barrel Impact with 18 or 25gr JSB’s at 850-900fps?? I believe your answer would be of great interest to many of your subscribers.

[@AirArmsHuntingSA]

The smooth twist barrels have a very very slow twist rate, so they would really shine at long range. Less impressive at closer ranges...

[@MissionaryInMexico]

@@AirArmsHuntingSA He's right, we are very interested in your answer. Thanks 4 info.

[@Oregon-airguns]

AirArmsHuntingSA in other words?

[@anamericantoreview1132]

when I was firing the casing from shotgun shells out of my rifled barrel for my paintball I saw very much what you're describing being most my cameras will film a Max of about 60 frames per second this is the only example but I believe it was more because of the ripples on the shotgun shell gripping the air and pulling it around like nuts it was definitely very interesting to watch

[@airarmshuntingzwgamoyetish2353]

Great video keep up the good work you're my inspiration and I've learnt alot from you

[@fred9532]

Very well done, as usual. Now if Fx would hurry along and ship our slug liners. Good luck Matt.

[@RichardUttingSharpshootingUK]

Fascinating. Interesting differences to the centrefire world

[@senatorjosephmccarthy2720]

I couldn't make 8 👍 outside, so 👍👍👍👍👍👍👍👍👍👍. I guessed the slugs were adding to the accuracy, but now know it's not necessarily. Thank you for the semester of pellet and slug rocket science 303.

[@marvin984]

Good info and thanks for all the time and work as well as cost you have put into educating air gunners . Marvin

[@philthefluter1]

Brilliant presentation,

[@Engineerboy100]

That was awesome! I am currently trying to figure out how to stabilize my HW45 air pistol at high power. It shoots fine on low pwoer but goes way off on high power.

[@BobLewen]

Matt, your explanations are always spot on and this has been a great series. But, here it comes..... what would be the ideal stabilizing velocity for a .22 FX Hybrid slug shot from an Impact with a 500mm smooth twist X barrel with telescoping shroud???? As you probably have every combination of barrels and liners, this question could help many Original Impact owners who have purchased a 500mm STX liner to fit the original Impact so it can be used to shoot the new .22 Hybrid slugs. Thanks in advance for your expertise!!

[@nojnoj3069]

Yes. Thankyou Matt. You explain the heavy duty facts without me phasing in and out. .......

[@syedirfanahmad9626]

Watching this video for the first time was too techy and hard to digest because of scientific terms and details. But, it was good. Would eat h it again to understand properly. You seem to have much deep knowledge about things than the manufacturers 🙂

[@mayankbanerjee3355]

"Father of Modern Airgun". You know your stuff.

[@neacailalvaran5271]

Very detailed. Greetings from Philippines Matt!

[@leerobinson6086]

Fantastic stuff matt! This was very educational....👍👍👍

[@clmarek1]

Great video! Really looking forward to the rest of this series. This is one of my favorite aspects to airguns. You have this emerging technology and knowledge coming out of the sport that is really pushing it past all preconceived boundaries. Precision long range airgunning is the future. The past 5 or 6 years has been exciting. The next 5 are going to get really crazy. Ohhh YEAH!!!!

[@easternblocairguns2728]

This was awesome! I love this science stuff. Matt, your the best in describing this stuff.

[@giovannim5101]

Excellent Matt i was waiting for this for a long time i knew for a long time that some thing was going on with the air rifle's barrels. being retired from the firearms industry i know the importance of the twist rate on the barrels and bullet weight , i would like to see FX offer replacement barrels for other air rifle manufactures , or maybe other company's should start changing their process, thank you for a great video.

[@timsmith9169]

Very good info .I gotta my first air gun at 10 years old that was 61 years ago .I find it very awesome just how far the air gun world has come .👍

[@ceasarsilva4669]

Have u thought or already made ur line of airgun because you already help me make sense of this sport and u helped me make my mind on what airgun i want so u have saved me $ thanks so much matt for ur love and passion for this sport and if have done or will do ur line of airgun i would no doubt buy one i hope manufacturers notice ur wisdom on airguns thanks bro

[@JM10344]

It troubles me that I don't see people revisiting your videos and / or new airgunner jumping on board and trying to catch up. If they are watching, help you and the community and leave a comment just for the algorithm.

[@stevenlee9713]

Hey Matt you know your stuff. Been in to air riffle’s now for a few years now & I wish I had your knowledge 🙏

[@MrJamesd18]

Matt, I follow your videos and you are so honest, not a salesman. Do you export to USA as I'm, very interested in buying a "tuned" Huben Gen 4 .22, By tuned, I mean problem free.

[@phillipmendiola1257]

Awsome , very good information and schooling , I have found that 25cal 33.7gr Neilson hollow point slug , are very accurate in my high power air rifle putting out 55 FPE at 945 fps , rifled barrel , I tryed the jsb 33.9 mkll heavy the pellets would wobble the only pellet I found that was accurate was the preditor polymags 26gr , 970 fps and very accurate, every pellet I tried just wobbled and went every where

[@vassilisgreece2446]

Thank you so mutch ! I have learn so mutch from this videos and understand how everythink works . Verry good work ! 😁👍🏻

[@Physics072]

The main reason I like pellets over slugs is they use less air for a given velocity and they are 2-3x cheaper to shoot. If I want more power I will go to rim fire then center fire. Gets old filling air tanks. at 50 yards pellets are very accurate less picky. Are not as twist rate picky as slugs which are stablized by twist rate more than diablo pellets are. Not going to turn a air gun into a powder gun. You start to use more air, more money on slugs. Just grab a rimfire if you need more range.

[@AliBagusChannel]

Yesss... You right.

[@MissionaryInMexico]

If a video has only 1 out of 10 thumbs down, it means it's a good video. I'm #833 thumbs up, and there's only 11 thumbs down. Which means, Matt, your videos are among the absolute best on YubTub. I'm biased, but those numbers aren't. You've nailed down your niche.

[@AirArmsHuntingSA]

Thank you for your kind comment!

[@semproniodensso3353]

With a budget rifle such as a P35 and also budget 28 grains Hatsan slugs, I land my shoots in a 20 cm/8" target at 160 mts/175 yds slug after slug and even on a 100 cms/40" diam at 220 mts/240 yds, regulated at 140 bar as from the box. At 220 mts I am starting to look for a smaller target, but those were my very first 20 slugs...the scope it´s also a Chinese 6-24x50 SFP the only "luxury" it´s the sunshade...no bad at all!!

[@milesm1465]

Matt. Can you get in touch with me please, unfortunately there are some issues in this video which give the wrong impressions on how pellet stability works. I speak as someone who has worked in the theoretical and practical aeroballistics of gun launched projectiles for 40 years including pellets, bullets, artillery shells, tank ammunition and just about everything else ever launched from a gun.

[@lensman5762]

I am very interested to learn about this issue.

[@milesm1465]

Unfortunately it is not just one issue and a full explanation of all the issues would require a lot of space and time. But one of the first issues is in the basic method of stability and the aerodynamics involved. Pellets are not drag stabilised contrary to popular myth and the suggestions in the diagrams.

[@jasonnewton3842]

@@milesm1465 Is there any litrature to support your claim, Im sure this will have surprised a few people especially myself.

[@milesm1465]

@Sid Vicious Pellets are flare stabilised a common and simple way of stabilising projectiles where drag is not important, typically very short range projectiles. Flares stabilse in the same way fins do by producing normal forces at right angles to the pellet centreline. This produces a stabilising moment about the pellet centre of gravity. Pellet axial forces act through the centre of gravity and thus cannot produce any stabilising moment. True drag stabilised projectiles use ribbons, parachutes or flexible drag devices which stay pointing in the same direction when the projectile yaws and thus produce a stabilising moment about the centre of gravity.

[@milesm1465]

@@jasonnewton3842 The literature to support my claim is any basic aerodynamics text book which will show the true definition of centre of pressure (which is not as shown in this video) and the way in which any flare stabilises through producing normal forces at right angles to the projectile centre line as explained by slender body theory with a relatively long moment arm to the centre of gravity. Aerodynamic stability is all about aerodynamic moments about the centre of gravity, not forces. It really is basic aerodynamic stuff which anyone who has studied or worked in projectile aerodynamics and ballistics should know. However, perhaps the most obvious flaw in the explanation given in this video is that, just like the diabolo pellet, the drag at the back of a slug is also much higher than the drag of the front at subsonic speeds and yet it is not aerodynamically stable which it should be if stability was due to drag forces. And no, Matt has never been in touch despite my emailing him.

[@recklessjunkie]

I love the metal work of these competition guns just look at that butt stock and trigger and trigger guard on the rifle at 5:20 just beautiful 😍

[@EduardoNakiri]

Great video ! Thank you guys !!! When the next episode will be released ? I'm looking forward to get that infos about rotation... See ya !

[@libra7624]

Like a top toy you spin on a table the pellets spin gets slower causing wobble as seen in the scope....pellets are sensitive to certain speeds and twist rates in the barrel...having different twist barrels to chose from is a good idea....each pellet has it's speed and twist limitations...like wad cutters for example you need to experiment but adjusting speed down where as heavy round nose pellets are less fussy......a good idea for pellets in a person's rifle is to test all pellets not only a different distances but adjusting the speeds untill accuracy results are achieved..even cheap plastic air rifles can be more accurate simply by this method .. no fancy science but just seeing how pellets improve on paper in the field...but with all your air rifle collection to find the magic pellet for each of your air rifles

[@lensman5762]

Very interesting topic and well presented. Thanks.

[@LourensVideo]

Great and informative video explained in a way a novice like me could understand.

[@victoryfirst2878]

Thanks for the education on tributary of slugs. What brand of scopes are best with a decent price ??? Peace vf

[@shibajimukherjee7574]

Very good advice and explain bother Matt......

[@Meloncholymadness]

Starting to think you're working for FX!

[@AirTanksPlus]

Awesome Video, you are doing a great job of explaining everything.

[@richielee5398]

Some good info there. Keep up the great work.

[@earthman4222]

Thank you for explaining so much. Thumbs up for me.

[@JohnDoe-el5ir]

Great video! Pellets are a compromise between small energy and ability to obtain some accuracy. If there was no limit in most countries everyone would shoot slugs. Easier to produce, better overall parameters. Instead they had to think how to shoot with low mass, low energy and still have some reasonable accuracy.

[@timlarcombe9096]

One word, excellent!

[@je8422377]

One hundred thumbs up 👍🏽!!!

[@JC-zw9vs]

+1

[@GunDrone]

What happened to part 8? When are you going to continue the series?

[@Liansanga_Zadeng]

Wooooooooow once again awesome informative video....Matt 👍🏼👍🏼👍🏼

[@davidrouth9901]

Matt - until we start using lasers - you are the man!!

[@sp5mxx]

Matt, it's just the opposite of what you said. The bullet rotation speed does not decrease noticeably during the 0.5 second flight from the barrel to the target. The difference may be, but probably will not be, measurable, while the initial muzzle velocity is much higher than the target velocity. It is precisely this reduction in the linear velocity of the projectile along the projectile's flight path that causes the rotation to linear velocity ratio to be disturbed. It is the speed of the projectile on the route between the barrel and the target that decreases dramatically, while the rotation speed remains almost unchanged. The length of the path between the end of the barrel and the target is 100 meters, and the length of the path that the rotating pellet has to travel, it will make 200 revolutions with a projectile circumference of 34.55 mm, this gives a distance of 6911 mm, i.e. about 7 meters of angular path in relation to 100 meters that the projectile must beat to target. Matt, shot spinning speed cannot change during the projectile's flight, which lasts only about 0.5 seconds. On the other hand, the ratio of the projectile spin speed to the flight speed of the projectile flying towards the target changes. When this speed is excessively reduced, the spin speed remains at a similar level as when exiting the bullet barrel. Suddenly the missile is over stabilized relative to its currently reduced velocity.

[@ellobo1326]

That is precisely what Matt said. That the velocity/spin ratio changes as the projectile slows.

[@sussexspaceforge2429]

very informative, well done

[@calvinboshoff5003]

Matt you might not see this but there is a new app called safari outdoor where you can post your hunts and share your info on guns,quinton de kock is also on there. It’s just an a idea

[@psnwpestsnipernorthwest2196]

Love this series! Keep them coming, Matt.

[@rosscanner1977]

very informative. good job Matt and thank you very much.

[@robertomartinez1741]

Super nice video Matt

[@tonchecker]

Excellent Information. Thanks man.