Dude this is a GREAT SERIES !!! Thanks for taking the time to put this all together, it’s obvious there is a ton of time in this video . Super well done Buddy

Good that you touched on lead ( bullet ) hardness. there are so many myths about this subject especially in the handgun side of things. I like the way you approached and presented your analysis of what you find to be the causes for downrange performance. I wish I could afford to have you build a 22 for me ( to old and to broke to really matter) what I like the most about you is your work ethic , attention to detail and how you backup your approach with real life testing - analysis. Keep up the good work. Love your videos.

Man, the wealth of information offered in this video is incredible. Great editing as well, good pace as the video continues.

Learned a HUGE amount from you man. Glad the entire KZfaq world isn’t all just marketing. Thanks for putting this together.

I'm 74 years old and have been a .22 rimfire nut since I was a kid. Lots of smallbore silhouette shooting, small game and pest hunting, and just pretty much loving being on the shooting end of .22 rifles and pistols. Your series has answered a lot of questions for me and I really appreciate your deep dive into the science and art of .22 rimfire. I also shoot PCP .22 caliber air rifles a lot and find it quite exciting that the trend lately is toward slugs rather than traditional diabolo pellets. In fact, the high end air rifle ballistics are about the same as standard velocity .22 rimfire ammo while maintaining excellent accuracy. Have you looked at any of the air rifle barrel and slug designs? Thanks for the great videos. Jess

I have nothing to contribute, but I feel like you deserve a comment… Fabulous information based on your real world experience. We need more of this in the world!

Thank you for giving us more answers to questions in terms that relate to actual shooting accuracy results. The time that you have spent researching and doing the leg work is amazing. Keep the videos coming.

Excellent analysis! First time I have seen the hardness variable addressed in a video on 22LR. Thanks for the educational update.

Thank you for all the data/detail.

Dude, with this series of videos you've started writing the "Online .22 Rimfire Bible"! Trust me, there are many of us who appreciate you imparting your knowledge to us.

Coming from PRS and mil sniper comps, apparently my arrogance thought I would pick up NRL22 right up. Wouldn’t you know .22 is a whole new world. I don’t like to waist my time with processes that BR or F class guys do. I have nothing against them just not my style of shooting. I also need to know the science behind the process backed up with practical use in testing. Thank you for your knowledge and the work you put into this information. Dave

Really enjoyed this episode! Easy to understand ,and follow what you were explaining! Definitely makes me question the wisdom of spending money on cans and muzzle brakes on.22 rimfire rifles!! Whole lot of money,for diminishing returns!!😮 😊 Great information!!

Thanks Kenny for all of the information and video.

You did an awesome job explaining that. Tons of information concisely and directly presented logically. Things that I've never even thought of with 22LR. Super awesome

Loving the series, and your sense of humor. Thanks Kenny!

Your understanding of these concepts is amazing. Excellent video.

Great stuff! Your explanation of the cold bore shot phenomenon makes complete sense. I hadn’t realized how many factors there are that determine 22 ammo consistency and accuracy.

Very informative series Kenny…

Really enjoyed the class and learned quite a lot.

Great video and explanation. Appreciate the work. Tons of stuff to learn.

Your practical insight is a wealth of wise counsel. Thank you! The series unfolded at a perfect pace with verification of the facts with your testing gear and observation of the results.

Loved your documentary, your explanations are easily followed, having been a turner in the past, it brought back some great memories!

Great video thanks for taking the huge amount of time to make it. You are very well spoken as well as knowledgeable..

You’ve just done your pHd thesis. Excellent! Mind opener. Man my OCD just got worse.

So much information. Was amazing to hear different perspectives on the why's of .22lr accuracy. Love what you do.

Nice video. Well done. I liked the explanation on lead hardness and flyers

What an abundance of useful information, THANK YOU!

Thanks! A real education. Great in depth detail. Awesome vid.

One of the best scientific studies have seen. I would like to see more of these.

Excellent video!

Great video Kenny and great work thanks for sharing

Wow! This was a LOT of very interesting and educational information! Well done! I will have to watch this video a few more times to fully absorb it all, but that's OK, I enjoyed it! Thanks for putting this together! Definitely "THUMBS UP"!

This was one of the most educational videos Ive watched in a long time. Definitely helped me understand more about what Im looking for in my custom 22LR when I order one.

FANTASTIC VIDEO!! There are almost good videos on bullet casting and accuracy. Nicely done!

Jeez that was insightful, fantastic information, thank you

Wow fantastic lessons in 22 lr. While i didn't fully understand everything it was great.

facts correlating in reality, finally...love it, thank you sir!

enjoyed hearing your astute knowledge .

Great video with a wealth of understandable useful sensible information!

Very cool presentation of your research.

Thanks Kenny !!!

Very informative, always

This is a great series which I’ve rewatched several times. One of the things I just picked out of the part 2 is less grooves for deformation and that brings me back to Matt’s rifle with the Shilen four groove ratchet rifling. If you’re shooting groups where you have sighter shots and then KYL at 100yds with no sighter shots does the ratchet style rifling help. Great info Kenny.

WOW!!! That was fantastic.

This was so good that I had to save the video and I will watch probably 10 more times to take it all in.. Loved it.

I did make it to the end. Good info Kenny. Keep doing the good work you doing Brother. I’ll have to go back & watch part 1. Thanks for sharing

great episode

Incredible wealth of information!

Great content….love the subject matter…

Great video and TONS of information !! Gives us geek shooters lots to think about.

Another great great video!

Wow , to just give away all that hard earned knowledge , to anybody that has an entrust in accuracy , is very giving of you . The information is very interesting . Thank you for your time

Great Information .. Thank you

Great content! It was awesome. Learned a lot!

Fantastic

Really liked this.

Great video - I’m an older ( new ) 22lr shooter, running two CZ 457’s - Lux and Varmint MTR, both shoot better than me. Only about .2 difference between them. Always learning, always trying to practice what I can control - but Always having a Blast trying to better my groups !! Keep up with your videos !!! Thanks

Great video with lots of useful content. Much appreciated and I subscribed.

Man, I am glad you are building my next 22LR rifle. Every time I watch your videos I learn something useful. In fact I watched this video three times before I made a comment!

Kenny, great info as always. Might take my mind a bit to process 🤣.

Super interesting, like the indeed ballistics

Very impressive presentation 👍

The most accurate 22lr I own is an Anschutz match 54, 24in barrel. If you swage a bullet through the barrel you'll notice the bore diameter gradually tightens. They hand lap the barrel at the factory with fewer strokes at the muzzle, this probably allows for a more gradual deformation of the bullet

Sir you have so much knowledge. I just subbed. I have a off the shelf Savage 22lr 64. I hunt varmits and squirrel at 25 to 65 yards. I can do this but I really have learn so much from you. I enjoy your videos. Thank you for sharing your knowledge.

Never to much information… Thanks

Just fantastic

Again really good stuff keep up the good work

Great job my friend.

I am new to 22LR and with a degree in mechanical engineering (at least that’s what the piece paper say😅). I just want to extend my thanks and say that was an excellent video and loved how you totally geek out ! I am toward the end of getting my rifle build (vudoo 360 with a fluted 20” bartlein, and threaded) and will be dealing with all the stuffs you just covered, so thanks for the heads up.

Can't wait for video #3!

Good information

Thanks!

Love the video

Fantastic video and information. Many thanks, I have learned so much from this and really appreciate the depth and detail that you cover. Every day is a learning day and this is a good one. I’ve just subscribed. 👍Chris UK

At one point I got in to break barrel air rifles and I figured out there was one brand of pellets that seated in the barrel more consistently than others like crossman which had a variance in tightness when seating the pellets. The crossman was a softer lead as well I noticed. The brand that seated more consistently had tighter groups.

Thank You Sir! I am learning! 👍🇺🇸 #22aday #pfot

Very informative, thank you, liked and suscribed, and shared

LUV THE 22LR GURU #GOAT KENNY U R THE BEST 🎯🎯

Thanks

This video has been very enlightening for me, being now able to understand the factors affecting .22LR accuracy. I have spent good money on what I believed were the best components, Anschultz 1710 rifle, NightForce NX8 scope and Lapua Centre X ammo yet to be disappointed watching a well executed shot drop the projectile into the Bench Rest 50 target below the one I was aiming for! It does come down to the ammo, and it is disappointing to spend top dollar on Brand Ammo to receive poor quality. SK match has worked reasonably well but not good enough to win competitions, Centre X showed some improvement but the bad rounds destroyed any chance of good results.

Awesome video! I will using this information to teach Scouts about rimfire rifle shooting.

Amazing video, thanks for the detailed explanations. The mass market wants 18" or 20" barrels but Anschutz and Eley have been doing this for decades, and they use 24"...

Another excellent video. I also tried case sorting and got no difference as well.

Looking forward to your 457 barrels! My varmint 20” non MTR is producing about 0.5-0.8” 10 shot groups at 50. But it can keep 20/20 rounds on a 2” circle in calm conditions at 100. Not great not terrible but I figure I’ll either tolerate it and continue ammo testing or just go balls out on the nicest custom barrel. I realize the CZ is not optimum with its 1” max diameter but I think I’d want 26” minimum. Plus… as evidenced by my 28” super Lux long bois are pretty dang quiet with match/subsonic

Interesting video. Sorry I didn't find it sooner. Regarding longer barrels being more accurate, another factor to consider is that after the powder burns out, the further down the tube the bullet goes, the lower the residual gas pressure and temperature get, so there will be a reduction in muzzle blast playing off the bullet base with a longer barrel. That will reduce lateral drift caused by any degree of asymmetry there may be in how that blast deflects off the bullet base.

Sir, sorry, you addressed the issue perfectly. thank you

good video, keep it up.

I've just found this channel yesterday and have bookmarked about 1/2 the vids I've watched. Florida doesn't seem to have a big rimfire community and/or competitions, but who doesn't want an accurate rifle? Thanks for the valuable information!!

I love these 22lr tutorials that you have presented us with! I shoot precision rimfire benchrest. I always sort my bullets first by wieght then by rim thickness. I notice a lot less "Flyers" & if there is one it usually only costs me a point. Now I know people scoff at this , but for me it is one less thing to worry about when I am behind the scope. Again great video though I will continue to sort for my own peace of mind!

My CZ 457 varmint 20 inch with a KRG chassis shooting clovers at 50 yards with CCI standard. No idea how I got so lucky with the standard stock barrel, but I'll take it. thanks for the video man

The obturation aspect of having lot to lot success is a really good insight. I have to wonder where the barrel manufacturers/ rifle makers for International Smallbore come down on this. After all, that’s who the R&D for high end rimfire is geared to historically.

Awesome information. I just started my training with 22lr rifles. This will be helpful. Thanks.

I have the Area 419 bolt knob on my 308 Bergara HMR it’s cool. Watching all your videos about these 22 bolt guns is seriously making me want a 22 to match the 308. You should do a Ruger mark II 22 pistol barrel with some of those cut offs. Have a tac driver pistol and a cool talking piece to boot.

My grandfather has an old rem 541-t that he would shoot same hole groups at 50yards and won countless rimfire matches. I used to take it out and shoot it to pass time and could never get it to do what he could make it do. But the more I shot the more I realized I was taking my head off the comb about the time the trigger broke and learned to calm myself and look through the scope to see my impacts instead of anticipating the shot and trying to see where I hit before the hun was fired😂 so I always tell my buddies operator error is 80% of missed shots. But anyhow I absolutely enjoy your videos keep it up

Here's another theory on why the longer barrels might be more consistent. Do think it is possible that when the bullet leaves the barrel the hollow base of the bullet will have a tendency to flare a little if the pressure is higher and this would hurt consistency? With the longer barrel the pressure is lower and the base of the bullet would flare less or not at all. I say this because I have recovered fired 22LR bullets from very short barrelled pistols and the bases were grossly flared. I also think you are right. Those soft lead bullets are kind of swaged by the barrel and if they happen to go through a tighter spot they are soft enough to kind of swell back to shape for full obturation. A harder bullet may not do this so if it encounters a tight spot it will remain deformed and will develop more "looseness" as it travels down the bore and encounters more tight spots. I say this because as a trained forensic bullet examiner it is well know that with lead bullets, the striations we compare are usually from the last inches of the barrel whereas with jacketed bullets they will pickup different striations on their surface all the way down the barrel. The jackets are harder and are permanently deformed or at least until the bullet encounters something else later that might over-engrave the first striation.

Thanks, I have had some good accuracy with my 22 but as analyzed more variables are in play

Super Informative Video, I’ve learned a lot from it, you earned a subscription from me for sure

I’m not sure what it is exactly either but I do feel that around 18-20” something is “settling down” I thought maybe it was more velocity related. But your the one with the awesome tools lol so keep doin whatcha doing! Very interesting

I believe that obturation is the expansioñ of a bullet casing under ignition pressure which in turn causes the case to grip the chamber walls. This greatly improves the safety of many cartridges by preventing the bases of cartridges being torn off. When the pressure releases the case shrinks down and can be extracted. (,Information sourced from Wikipedia)

You earned a new subscriber. Please do a video on the remington 597 bull barrel. My son and I have 2 of them. At 200 yards 10 shots none leave the dime size circle. Have rifles will travel.