Recoil Dynamics & Harmonics | AB101 pt.5

[@machobunny1]

The video is over 4 years old, but this is the first person I've seen who actually understands the engineering physics of how these things work. Others may have some knowledge, but they cannot explain it correctly. I've spent days looking at truly lame attempts by others to explain some of these very complex issues. THANKFULLY I found this. WELL DONE. I'm subscribing.

[@ceterfo]

I also feel like after he created these videos and everybody saw them everybody's just trying to build off from his base point cuz like you said he just did such a great job.

[@amadshamsaldin4336]

Always love this guy's videos. You can tell he puts so much time and effort into researching all this stuff. A true air rifle enthusiast and a loyal youtuber to his fans and subscribers. Shoutout to you from Tennessee, USA.

[@finns23653]

Yes.

[@thomaspauld]

Your thirst for knowledge, your ability to put things over (teach if you like), your obvious interest in PCP's, your ability to shoot well. MAKE for great videos that are definitely worth anybodies time to watch. KNOWLEDGE is the finest gift you can give anyone, for that I thank you. I find myself looking forward to your next videos.

[@lwright2204]

Very well said! Couldn't agree more.

[@lamoe4175]

Also to increase rigidity - make your own barrel band - put a hard rubber or plastic spacer between barrel and bottle. Can use a velcro strap to hold them together.

[@georgedeedsnotwords2162]

The more I watch the more impressed I get . You will probably forget more than most shooters will ever learn about this stuff . You have a unique way of connecting the dots and getting the information to point . I had maby three teachers in my life who could explain things to me in a way to capture my interests and make sense of it . Thank you and please do not stop . "Deeds not words"

[@regsparkes6507]

These are points, or rather topics that I haven't considered before., but I will do now on. Thanks for the time it took to do these videos Matt, I find this series very interesting.

[@tarekmakhoul3744]

I was watching your videos over and over from years, until this video, I just subscribed cause it was really an expert, professional and devoted . I'm old hunter and I love it, thanks for your videos, and I will be waiting the next episodes, good luck mate.

[@senatorjosephmccarthy2720]

This series is Most Helpful, Matt. Thanx!!

[@ceterfo]

Hey look over there there's some communists.

[@mcleanjohnathon]

Your knowledge on these things is impressive and you have a brilliant skill in explaining it!

[@k.feduchy745]

Hey Matt, I just wanted to say thank you with some of the tips on this video. I was about to get crazy because my new FX Impact X on .22 caliber I’ve just recently bought (this is my second Impact) wasn’t holding the POI at 50 meters and I wasn’t capable to understand what was happening. After whatching this video again, I have just realized that I was zeroing my gun with an Air Chrony installed at the muzzle, not taking into account this was dramatically affecting the final POI. The gun was shooting just perfect (as always... this is an Impact) but my POI was completely misscalculated. Now I’m back on track!!! This little Air Chrony is very usefull to take into the field but it is important to remember NOT to use it while zeroing your gun. Thanks again man. Cheers from Madrid!

[@perryl5150]

Above and beyond as usual. Thanks!

[@jeffreystroman2811]

As much as the shooting community knows of this phenomenon, this is one of the few channels to address it. And quite eloquently too I might add, thank you.

[@sumo479]

Great video Matt on a topic rarely covered for air guns. Awesome work and I look forward to your next video.

[@toms8818]

Excellent!!! best explanation I heard so far!

[@scottkelly5513]

nicely explained matt , a lot of technical information translated perfectly, cheers mate, ,

[@bretlawson924]

Thanks for the video and your time making it. I am learning a lot! Explains why I prefer shooting my regulated Armada over anything else. It is heavy but man does she put the pellets in the same hole time after time. Long range is not a problem for me anymore other than getting the wind right.

[@veritas4699]

Well put very instructive series Matt. I look forward to more and to meeting you at this years EBR in Phoenix.

[@stephenrongner-cook5454]

Another great video, thanks Matt.

[@veritas4699]

Well said and demonstraited. See you at the EBR in October.

[@tomirwin4819]

Amazingly clear explanations Matt ! Thanks for sharing 👍👍👍

[@ViniciusQ9450]

The EDgun Matador has a nut at the end of the barrel, that pull the barrel, stress it. According to manufacturer, it increase accuracy. And after see you video I can belive that creates a node in a great spot, that increase the consistence of vibration. Excelent serie Matt! Just waiting for the BC episodes. Cheers

[@lakeimaging7062]

What a great series, thank you for putting this together!

[@julian-vm5ec]

Always enjoy your videos , keep them coming .

[@Rusty-GB]

Another good video Matt, Keep up the good work. How about adding one of the effect of temperature. A lot of people out there don't seem to realise how much of an effect temperature can have on a PCP.

[@jamesvolo7948]

Great series! Thanks. Very informative especially for an aged powder-burner like myself. Your ballistic principles are right on. I have discussed this very topic in my book. As you point out, although unseen by the shooter, long, thin barrels can vibrate upon firing somewhat like a piano string (but at a much lower frequency). This unseen, but very real, effect can affect bullet placement. Tapered barrels are both lighter and stiff, and they can be "detuned" to avoid resonant effects. Fairly recently some manufacturers have started making thin asymmetrical barrels wrapped with carbon fiber that acts to dampen resonance and affect the placement of nodes. Not being an air gun person, I do not know if this solution has made its appearance outside powder burners (or even if it is practical). Has anyone attempted "damping" by putting tape or weights at the anti-nodes? Also a slight lateral and rotational movement of a rifled barrel at the instant of firing causes lateral jump, which also has the effect of a small error in bearing. As the bullet gains stabilizing rotation in the barrel, the more massive barrel gains a rotation in the opposite direction in an indirect proportion to the ratio of the masses. Known as recoil torque, this effect is often ignored, since it is small when compared to translational recoil (a.k.a. felt recoil in firearms) and varies from round to round; but this suggests the need for a stiff and heavy barrel. The heavier a barrel is the stiffer it is; and the better it handles heat. Increased temperature in firearms causes the bore to dilate. Target guns have heavy barrels partly for this reason and to limit felt torque. Once again thanks, a great series. Air guns have clearly come a long way since the old "Red Rider" or "Daisy" BB gun!

[@pacermanrocks]

Great info as ever makes you think cheers Paul

[@joejoiner5077]

Only just saw this, but a fascinating video and very well presented. Thank you for taking the time to make this and to present some fairly complex information in such comprehensible manner.

[@roberthernandez6192]

Those are nice tips bro.!! Thanks for sharing.!!!!

[@fox22250]

Well explained, Matt. As far as barrel weights are concerned, you might find some clues in the stabiliser systems used in tournament recurve bows. The harmonics involved in long rod stabilisers are broadly similar in many respects to those of rifle barrels. This is highly researched, mature technology and so might give you a few pointers to airgun performance.

[@airgunningcolorado78]

great demonstration! great series and great channel keep it up man!

[@joetaylor486]

Outstanding video - really illustrated the dynamic nature of gun operation. I recommend some of the slomo range footage on Forgotten Weapons - especially the machine guns, to get a further handle on this subject. This is probably why springer shooters tend to use rubber to bed their stocks....

[@ironDsteele]

With regards to spring air rifles, The description with tension on the guitar strings describes perfectly the vibration in the spring. By adding preload (washers etc) you can greatly reduce hold sensitivity by increasing the spring frequency and amplitude that occurs after the shot. By doing this, I've noticed very little if any effect on velocity.

[@Rucksack57]

Thanks Matt. I shoot every day powder burners and air rifles and struggle with groups moving around. Trying to keep things consistent.

[@RiaanLabuschagne82]

Hey Matt love your video`s .Just want to add by changing the tightness of the bolts holding the stock will change the harmonic`s as well.It will change the group size of the gun.

[@tyskie2]

Very nice video! Best airgun channel on youtube!

[@rnmike1569]

Damn Matt, tour can rip on that guitar! Nicely done. Another great video too. Thanks!

[@viperup]

Amazing content, was a pleasure to watch and learn. Thanks so much !

[@no.7893]

Epic guitar solo and air guns , damn you're good . (Btw I've subbed ,great content dude , keep it up)

[@Martin-kq3qw]

I am based in the uk and as you are aware we are limited to 12ft/lb, currently I have the s510 but was looking at getting the wolverine b. Cheers bud for your advice and keep the videos coming.

[@brettjackson7666]

Awesome video, very interesting! I'm definitely getting a barrel band for my .22 Marauder.

[@andrewavellino6427]

hello Matt I'm a big fan of your channel. I really enjoy your well informed lectures on airguns,could you please find time to finish the AB101 series? I would really like some more of your info on PCP air guns!

[@budandbean1]

At a boy there Matt, now that's a real sweet intro! Sounded good too! Cheers...

[@joelgrimes9599]

You rock. great videos.

[@PKPK-rr3rs]

Nice video boet, you should discuss MOA, I am sure many new shooters need to learn about it.

[@AnubisAkaLee]

Although I would absolutely agree that PCPs are better than springersat super long ranges, I do feel like it is worth advocating for them here. You can absolutely be as accurate with a springer as a PCP at typical firing distances if you are consistent with your hold (and you let that spring wear in and loctite every bolt). You will not be able to run out and pick a new springer up and go straight to hunting with one or anything. But if you fire it often and I mean run tin after tin through it until your hold becomes a habit you will absolutely be just as accurate with a springer at a pretty decent range. That said, the major point would be at those super long shots. It may be possible, but I would not trust myself to make a clean kill too far out.

[@lordhill1108]

Changing the stock will always move the zero. You have released the loading of the screws and then re-tightened them. Even if you removed the action and then put it back in the same stock, your zero will shift. A shift in zero when fitting a modulator has nothing to do with harmonics, it's to do with air moment, as a pellet leaves the barrel a blast of air expands behind it. with a mod fitted this expanding air is taken up by the MOD. changing you zero.

[@newton833]

Veryyyy interresting subject. Great explanation.

[@tracyquiring4185]

Absolutely fascinating. I am learning so much, thanks.

[@biagiocozza2933]

Great video Matt.

[@timothydysinger2455]

great information excellent presentation and explanation.

[@matthewmcclellan5531]

Matt this was a great video and please keep them coming

[@ToreDL87]

I learned a lot here, thanks again for sharing! Off to tinker :D

[@nekeke1]

Great video. Great teaching.

[@iainbickerstaff7099]

Interesting video,makes a change watching hunting kill shots.looking forward to the next video.

[@StylewizeTV]

Great video and very informative!

[@georgiabeaverreapers4791]

Changing stocks out will cause a point of impact different just because you have changed one foundation to another! This can be proven just by loosening the action screws a few turns and not even changing stocks. Getting barrel harmonics right I believe is getting the bullet exiting the barrel at the exact same time as the center line of vibration is at its least. And this is done by fps, while barrel length, barrel rigidity and floating barrels are important, the timing of bullet exiting at lowest vibration is most crucial.

[@chrisfigueroa3361]

Matt your one smart guy thanks for sharing

[@tyroneclarke1666]

Well done Matt.🇦🇺

[@douglasbeachler3890]

You must sleep with your thinking cap on. Another outstanding video. Like the way you challenge the mfg's to continue improvements. Now you've got me thinking, why not solenoid to replace spring, hammer plunger, valve etc? Playing with some hacks based on Ryobi's 18 vdc power supplies and tools. Look forward to #6. BTW, any recommendations on pumps?

[@tyrantwitness2482]

Buy a Daystate !

[@lennycruz4558]

Great video,very informative matt, thanks

[@Rootcauses451]

Well done boet! From a boerie in California!

[@ucsvt]

"Rifle Accuracy Facts" by Harold Vaughn is an excellent book on the subject. It's out of print and is expensive if you can find a copy, but worth every penny (or rand). If you want to fry your brain, this is the book that will do it.

[@Crete1943]

Note to oneself: proper tuning involves the matching of the average velocity (i.e., the speed a pellet flies from a chosen barrel, achieving the minimum variation in feet/metres per second), of a particular caliber (a bigger caliber like, say, .30cal., is usually preferable for longer distance shooting, as it is more forgiving in terms of pellet velocity), to a particular size/weight of a pellet/ogive that is plentifully available (and cheap). These two factors, the velocity and the pellet must suit each other perfectly in a specific barrel for a particular distance in order for a quality PCP (or a CO2) air weapon, to perform optimally. Using one single stock helps to tune a precision hole puncher. Changing the stock requires a new test tuning procedure from scratch.

[@jeffallen1771]

Very interesting and informative, thanks.

[@alemchelth]

Matt, the weight of the pellet also affects the nodes and anti-nodes. this is something I've been looking into recently also, as I am attempting to enhance an Umarex Octane 5.5 into a 100 yard paper pinger.

[@joris248]

Nice man 💪

[@pete.mitchell]

Greetings from Poland Matt :)

[@adolfheinrichs7413]

Another great video in explaning "Air Ballistics". Watched ever episode to learn as much as I could to make the right choice in buying a rifle. But you only talked about mechanical rifles. What about vibrations in an solenoid rifle, which got no hammer?? Thanx in advance and I would love to see you creating up your own air gun someday, where you put all your knowledge in to make it as near as perfect, as one could get! :D

[@toddwmac]

Matt if you are not a teacher...you should be teaching some of the "teachers" out there. Thanks!

[@frankmccamant8633]

Great series - learning a great deal. Thanks! I’m curious about the stock weight demo. How would that translate into the choice between a synthetic stock versus a wood stock? Say for the AV Avenger: considerations for the synthetic stock versus the new wood stock option?

[@ceterfo]

If I'm not too late you should go wood. You're paying like an extra 50 bucks or something that's going to feel a lot nicer in your hands it'll have more weight and should help with harmonics.

[@arubino19]

May I ask what you do for a living for a job? You are very intelligent with all this stuff! I have learned a lot from you and Ted'sHoldover!

[@guloguloguy]

.....I am wondering if you might be able to closely determine the locations of the harmonic "nodes" along the length of any barrel, by setting up the gun so that it is properly aimed in a safe direction, and then fired by use of a string attached to the trigger, etc., so as to minimize any "dampening" by the operator/user. Then, heavily "dust" a layer of fine, dry talc, or baby powder, or, fine starch powder along the top of the barrel, all the way along it, and when the gun is fired, most of the powder might fall away, except where those nodes are centered. Good luck!...THANKS, for all of your AWESOME, DETAILED VIDEOS!!!

[@nmarbletoe8210]

That sounds like a fun experiment

[@AirwolfBMG]

Matt I love your work and your true enthusiasm. Question if I my? Does the Dr Bob bottle clamp for bipod. Effect the harmony. As we can move it closer to the breach and then move it along the bottle, closer to muzzle. I understand this is a older upload but it is all related to your ultimate end game. Once again thank you and your team, in the pursuit of accuracy 👍🇬🇧🤓

[@TheGreenMarksman]

fpsoutback has a nice video on shooting off different rest and its affects on barrel harmonics. anyone who liked this vid should find it interesting.

[@sjefsjegeren123]

There are two brothers in US or Canada which have done a lot of research and developing on thickness of the barrel in different calibers for long range shooting over 2-3 km. They are kind of high-end nerds, they have a company website which are extremely interesting where they have put out their results and thoughts. I cant remember the name of their company, but they are worth googling. US Special Operations Commando (SOCOM) buys barrels from them. I know this because I am a retired Norwegian and have worked with and been told this from US SOF units. I am not in this world anymore, but I know Seal team six/development group bought barrels from them in 2011. I cant tell today obviously.

[@Sir.Leonardo.Scherer]

This is a great series of videos. Make them on 4k please.

[@impactodelsurenterprise2440]

Love the info you're sharing here dude appreciate it. I'm curious about the stock change lower POI though. Could the lower POI be due to different stock screw torques and/or the mating interation between receiver and stock? I believe a slight variation in screw torque would have the barrel axis deflected differently in relation with the scope especially so since the S510 does not have a free floated barrel. Also, 0.5 mil different POI at 25yards equates to around 11.4mm shift. We know the S510 has a barrel length of 494mm. For a 0.5mil shift with a 494mm barrel we are looking at a whip displacement at the muzzle of roughly 0.25mm from center line. To me this magnitude of vibration seems abit too high for a PCP rifle? Perhaps it would be best to test the node/anti node displacement theory with a high speed camera and a dial indicator at the muzzle. Another more obvious reason could be lesser muzzle climb(not whip) due to the heavier stock?

[@eelcohoogendoorn8044]

Technical quibble; while it is possible for the totality of all motion induced in the rifle by the shot to result in a minimal amount, or at least very consistent amount of movement at the muzzle when the pellet leaves it, it is not possible for a barrel (or string or whatever) to have any individual mode with a node at the end, unless it is fixed there. An unsupported beam physically cannot have a mode with a node at the end. The barrel end is going to move; just hopefully not when the pellet passes.

[@airgunnerdk9513]

Interesting stuff and all new to me.

[@jaywhitney789]

Matt amazing info and facts 👊👊

[@apjdad]

The Benjamin Marauder has a floating barrel though it has a barrel band. The barrel does not touch and we are told it should not. What are your thoughts on making it more rigid by installing a semi soft material between the barrel and the band to make it more rigid. Would it dampen the vibrations or merely introduce interference in the standing wave and make the accuracy suffer?

[@StudioCST]

Springers are fine for long range hunting, I can shoot cans of a pole 100 meter away consistently. As I can shoot a bird of a pole with a springer. So a springer just takes a lot of practice. Most people say that springers aren't powerfull enough to hunt with, but my Hatsan mod 135 is great for hunting. Ofcourse PCP's are capable of a lot more and are way easier to shoot. A nice and informative video! Just wanted to let you know that there are springers which are great. It just takes a lot of practise and time. Keep up the nice vids and great explaining.

[@Leo-qj3wr]

Nice guitar intro!! Good vídeo like always

[@phishitaac]

great video.

[@speelspeelslim8825]

Very interesting!! Thanks

[@ReeBuu]

Keep going with knowledge. I believe and I wish that Educated shooter with well tuned middle range gun can get better success than with stock cosmoterific price-tag gun. P.S. You have some nice self-explaining graphs, are You making them just with excel or with kind of air gun dedicated stuff? Cheers!

[@thepredator1943]

Hi Matt, I have a John Whiscombe field and target rifle that has two opposed pistons that fire exactly at the same time.This action cancelles out the recoil completely,would be interesting to discover whether or how it affects the harmonics of the barrel if at all,the rifle is very accurate,snuffing out candles and striking matches at 25metres. no problems.Not bad for a springer.

[@jonathonappleby314]

very informative!! good video 👍✌

[@MrDenGreasy]

awesome video as always! I'm thinking on getting a hatsan gladius long cal 25. can you please make a video about that rifle? would love to here what you have to say about it.

[@blackbear9326]

Very interesting vid. 👏🏼👏🏼👏🏼

[@elmigwar]

Thanks for the huge amount of important information you are sharing. When you explained about silencer had to do with the harmonics (11:02), is it accurate that some silencers might also negatively affect harmonics by adding more distance between anti-nodes and barrels in different setups on different rifles/barrels? Thank you

[@jaimeroldan9785]

Am impressed about the topic.. Problem is how to acquire your airgun into the philippines.. Tnx

[@remihash2174]

Very good videos you are doing, thank you ! I watch them every time I can't remember something too technical for my brain ;) By the way I was wondering what kind of scope mounts are you using on your Wolverine and why are they made this way ? I mean, they are fitted "vertically", not a commun stuff ! Thanks again and greetings from France !

[@johnmoss4140]

Hi Matt, As I understand it, doing a "harmonic" tune on an Impact involves doing a "velocity" tune, balancing the regulator and hammer spring, then using the valve stop adjustment to fine tune the pellet speed so that it leaves the barrel on a "harmonic node". How would you go about doing the fine tune (harmonic tune) on a Dreamline (no valve stop adjustment)?

[@babarshafi]

Hi Matt. Desperately waiting for episode regarding barrel twist rate. How long it'll take to be on screen?

[@alexsaville967]

Hey dude I got my fx impact the other day have been out a couple of times, love it but just wondering if you have to unload the mags after each outing

[@chasingthefish9042]

Point of impact can shift just by changing the stock. Not just by harmonics but also due to fitment. You could have two of those nice stocks and the poi has a good chance of moving because nothing is EXACTLY the same no matter how hard we try to do so.

[@nmarbletoe8210]

interesting, makes sense. one could check that by repeated trials.

[@mdsogirhalodar5565]

Very very nice

[@darrinbennett6207]

Hey when is part 6 twist rate coming

[@xyoojmabchannel1456]

Very good

[@Sam-ko2yn]

First of all sorry for my bad english feel free to carrect me in any linguistic errors. I cant imagine that there is a way of getting a node at the end of the barrel, because the refelction of the wave at the end will do a phase jump. So the only way of creating a standing wave is to have an non-node at the end of the barrel. Otherwise it will just do what it wants because the waves are not interfering correctly what means that there are no nodes of any kind. So i dont get how its possible to get a standing wave and a non-node at the end of a barrel. So at my point of view that is not physicly possible. How can this be done? Does anyone know more about the physics behindt it? Also u cant compair a guitar string with a barrel. A string has to fixed ends and the barrel one fixed and one open. But the Video was quit interresting. Am I wrong or is there a trick to fix this?