Your son deserves a medal for his patience !

Great video. I think we forget the most important component in any shooting activity. The shooter. We have a young guy in my club over here in the UK who has the one and only RimX's I've ever seen. They are incredibly expensive here. He had it custom built with what looks like a scaffold pole for a barrel and a very expensive chass. It cost him thousands. He won the first two competitions he tried. Then along came one of our "older" members with a 50/60+ year old BSA martini henry single shot target rifle. The kid with the RimX consistently comes second (sometimes third or worse) to the old timer with the BSA. in 50- and 100-meter bench rest comps. The old timer can sure shoot. Doesn't matter how much you pour into a gun if your shooting fundamentals aren't right you won't win. Love your work. Looking forward to the next one.

Consistent with my experiences with Rimfire. I shot NRA smallbore Silhouette and Rimfire PRS for years. I found that all rifles are picky for ammo, and when changing ammo, it takes about 10 rounds for the new ammo to re-foul the barrel with it's own dirt... so to speak. I also found Rimfires do NOT like clean bores. In fact, I did NOT clean my rimfires (match ammo only) until end of season, or about 4000 rounds, and then it would take about 50 rounds to get them properly fouled again. I shot mostly CZ (452 back then), and I never saw much for tuners in the open classes until the 2010's. If you're on a budget, go stock CZ, find the ammo it likes best, and use that leftover $$ NOT spent on a Vudu22 to shoot 1000's of rounds. One upgrade you didn't consider, I always put a Timney trigger on my competition rifles, a lot of times the only upgrade I did. That consistent trigger pull helped immensely. A+ Video, thanks.

As a precision 22lr shooter this may be the best, most honest, with accurate information video I've ever seen explaining upgrades and the pros and cons of the upgrades and what acceptable groups look like for competition shooting. Awesome Awesome video!

It’s your honesty that keeps me watching your channel.

Great video. Absolutely love all of your builds. Please keep them coming.

OUTSTANDING! Thank you for your willingness to challenge myths, provide data down range, and taking us along on your journey.

Thanks for making this video. Considering the scarcity and selection of ammo this video provides us with some excellent recommendations.

Thanks for this video. The CZ 457 is a wonderful rifle. Your explanations and examples make it better !

Great shooting Kenny. Thanks for the video and information. You are doing some great work.

Enjoyed the easter eggs of knowledge throughout the video.

Well done Kenny. Lots of useful information.

My god! What great groups straight out of the box. CZ make great little guns.

Great content as usual Kenny! Thanks a bunch!

Thank you for making this video. There isn't much for rim fire competition in my area unless I go about 4 hours away. But I have been looking pretty hard at getting a 457. This is probably the most thorough video I have found.

Thanks for the video Kenny some interesting results!

I have a CZ 457 Varmint in a Boyds AT One stock, using a Harrell tuner and also a bolt shim. It absolutely loves SK Standard Plus. When I do my part it's a 5 shot one hole group at 50 yards. I love my setup. I learn a lot watching your videos. Keep up the great work. Thanks.

As someone who hunts as well as range shoots a rifle that achieves cold bore + point of aim = point of impact and then goes on to shoot a ~ 0.7 MOA or less group including the cold bore is a shooter, no question. That lack of cold bore deviation is vitally important as a hunter. Congratulations on a series of informative and well thought out videos.

Great video. Very helpful to a new comer to NRL22. Thanks

Thanks for this video. Always like comparisons. Blessings

Excellent video. Thank you for doing it

I watched your other video I believe your work is exceptional. In testing fairly you you use good judgment keep up the videos.

Absolutely good stuff real knowledgeable

Keep the videos coming, great stuff!

Love these videos. great work

Great video can't thank you enough

Impressive stock setup that got better with upgrades. Really cool utv you’ve got too

Very informative. Thank you.

Thank you for sharing your video..

CZ 457 Rock's. I have the Varmint MTR & it's my favorite. Great Video. 👍🏼

Great video. Tuner would be great choice over the suppressor. I have a 22 suppressor and never thought about the debris from it going into barrel, makes sense.

Really like your videos!!! Just getting into rim fire,so great info.

You make some excellent videos!

Most informative 22LR tech channel running!

Very impressive presentation 👍

Your the man !! As usual a very informative vid. I wish you would do a few howa builds or give a impression about them. Thanks !!

man id love to see a video doing a MK2 performance upgrade like this! youre videos are awesome

I think a lot of people these days are just addicted to blowing money on accessorizing. I somewhat understand doing so if a person is competing and there is money on the line, but most guys just love to spend that money, regardless if they get results or not. I don't think most even look at cost / benefit analysis. I don't mind spending 3 or 4x what a stock rifle costs IF I get 3-4x the results. I can't justify that kind of cost to shoot a .050 or .100 smaller group, but then again I'm not a competitive shooter either. I'm enjoying the channel and honesty. Found you a couple days ago and subbed. Take care.

Just learning about this type of shooting with 22s best video I’ve seen so far on KZfaq for this sport

Excellent content, nicely presented and you did not try to push for your custom barrel...just presented what you observed and did not try to omit the data when got surprising result with the surpressor...thanks for the time and effort making this video, well appreciated.

Awesome Kenny. Full specked out custom just gives the consistency not capable of other project builds. Makes me more excited for my full (Kenny) custom to get done.

Has there ever been a more popular rifle and calibre than the CZ 457, the net is buzzing with reviews on this beautiful rifle!

Great content Kenny.

Buddy, I'm only two minutes in, but I already know this is going to be one of the most interesting and educational videos on .22 LR precision rifles I've ever seen. Holy shit, this is going to be fantastic! Bravo!!!

As always great vids!!!

Great video. The one thing that will make that rifle shoot better in that factory plastic stock, is bedding the rifle with epoxy putty.

Love my 457. I have the pro varmint model and it shoots way better than I can. I screwed up at the beginning of the PRS season and put myself in production division. Shot the match, took 2nd, was happy. Then I reread the rules the next day. Immediately contacted our MD and told him nope, put me in open division. My glass/rifle cost exceeded the cost limit. (Ran a Athlon midas tac scope, by msrp it put me $41 above the limit.) So I decided screw it, stay in open and bought a KRG Bravo stock for it. lol (Cheaper than new glass) Only thing I need to do with it is get the Area 419 rail for the scope so I can move it forward a bit more. The want to do, new trigger. Other than that I'm just going to run it. It shoots amazing with sk match rifle ammo. I use rimfire PRS as training for centerfire PRS.

Won’t be long it’ll be a year plus wait for a rifle from you. That’s how amazing your work is.

Good stuff Kenny!

GREAT INFO.

Nice video well done.

100 percent agree that a supressor can hurt accuracy. It did on my rimx. Plus as awesome as it is to run one it's just another thing to worry about.

Great video........thx 👍

Parabéns pelo conteúdo 👏

I would really have liked to see you adjust the tuner and produce consistent bad groups then retune and shoot consistent great groups

Great video and good job👍👍

Another great .22lr video. Just started following you. Keep up the great work. CZ is killer with that big barrel. Tony Melb Australia

Hoping the one I have coming shoots as well. Nix the heavy barrel. Also will be taking advantage of their switchable barrels. The other positive about the 457 is it’s still selling for the same price a 452 was 20+ years ago. In a world where gun prices have escalated 50-100% Value for dollar. Thanks.

My cz457 likes sk pistol match ammo and I'm thinking of purchasing a ez tuner for it. Thanks for you help and informative video

Great Video !!!!!! Would love to see your barrel shooting against a stock bull barrel that would come on a VPC CZ 457 (none MTR)

Great video

Hopefully your czs come back in stock soon.

The best video 📹 🙌 👌 👏 ❤ 😍

Um sonho uma arma dessas aqui no Brasil. Belo trabalho parabéns

I found my CZ 457 .22 MTR shoot the Cheap NORMA almost as good as the SK Norma $5. per Box, SK $18 I also have the CZ 457 VARMINT Bull barrel. another TAC DRIVER. Likes the V-MAX, LOVES the VNT Got to love the CZ's Now I want to look into the tuner. But my barrels are not threaded, so more cost if I go that way for a tighter group. Wish I could post my group with both calibers at 50 yards from bench rest

some of the best shooting ive seen ,even the bone stock cz . like your buggy.

Good shooting. I was hoping you'd let the boy have a try at it.

Good job Kenny.

If you are getting hits that are touching, you should shoot at longer distances to open it up so as to better see any precision improvements.

thanks

You got that right brother because all my czs seem to like the most expensive go figure. Beagleman

I've heard a lot of great things about the valdada optics

Good one.

VERY GOOD INFORMATION. IF I HEARD RIGHT WERE LOOKING AT 2000 DOLLARS. THE ORIGINAL RIFLE 500 THE CHASSIS 1000 AND BARREL400. I WAS GOOD WITH THE ORIGINAL AND EC TUNER I FELT LIKE IT WAS VERY GOOD. WHO KNOWS WHAT IT WOULD DO WITH RWS OR LAPUA. THANK FOR TAKING THE TIME TO MAKE GREAT VIDEOS. WOULD LOVE TO SEE A RUGER AMERICAN THAT YOU CAN SHOW CASE

Cool video Kenny , but I’ll stick with my RimX :)

Saw a real good group with the stock/OEM barrel so a frugal fella who’s not into competition will do just fine I’d say. And still be able to pay some bills alone the way

Good video, I will say I want to see what the new barrel does after 500/1k rounds and it's fully fouled in.

AWESOME JOB! My dream gun is definitely a Rim-X built by you.

Kenny, I have enjoyed watching many of your videos . Have you ever done one to share your thoughts about how to clean and maintain the accuracy of a quality rimfire. I think that would interest a lot of shooters like myself. There seems to be many different opinions about cleaning rimfires in the shooting world. What has been your experience cleaning and shooting your fine rifles.

Have a 457 American standard wood stock set up…have tried all different types of ammo BUT always shoots best with SK standard plus yellow label every time.

Recently subscribed...Great content and straight shooter. I have a CZ that had the 'cracking' you observed with the borescope in your video - CZ 455/457 Build series | Initial Accuracy - The cracking runs from muzzle end inside about 2" down . The rifle tosses fliers with every type of ammo I tried. I was shooting factory class at my local club, but this barrel put the stop to that. Not sure If I want to chance buying another CZ barrel or just put a 'real' barrel on it and shoot unlimited class. Depressing.

That pistol match special is faster than the rifle match. Tuning to it would help but as big as that group was it probably wouldnt fix much. The pistol match special is good for cold weather, basically same as polar biathlon ammo.

Good video !! In your experience do you think going to a Bergara would need less upgrades?

Man thats a good looking chassis 😁

First thing I did with my 457 was to remove, yes, remove the trigger setting screw making the trigger as light as possible.. I would like to find a decent subsonic hollow point as the CCI 1050 fps I use is a lot less accurate than target rounds... Moderator fitted for vermin control.

i cut the barrel to 20 and 5/8ths inches (flat crown) and used lapua master M for good results, just couldn't get the original length to group at all

Awesome video with great info. What camera did you use and how do you do the split view?

Good video and results, for me chassis arnt much to look at so I wonder how a good action and barrel in a more traditional stock would shoot considering the ergonomics.

great video. I learnt a lot from you. I will tighten the action screws. I don't have the right tools.. Just wondering why you didn't try 100yrds. It'd have been a much better comparision. I'll go get some Sk rifle match matcho tomorrow lol. thank you for your hard work and money spent on doing tests.

This a very informative video thank you for making it I'm in the market for a 457 and a friend sent me this video. I'm glad he did. I have to ask but what part of the US are you in? That is beautiful terrain I would think Arizona maybe?

Would love to see a Savage MK2 rebarrel. Not for sure if can be done very well with their actions though.

Great video, any chance of a breakdown as to what you have in that little pouch toolkit? Looks neat and tidy

Nice guns, nice video... but I WANT THE BUGGY!!!!!

Добрый день спасибо большое за видео очень интересно 🤝👍

I'm new to 22lr precission shooting a really rookie, and find your channel very informative. Have you had any experience with Volquartsen rifles, like them or not?

Can you explain your barrel mounting on the CZ? Did you use the grub screws without the cutouts for the screws to seat into? Have you tried a glue in for elimination of action torque due to the grub screws?

nice information about some interesting points about tuners , cold bore shift , you knowledge and your opinions , with the price of rim X action or a vudoo the turbo is not very comon in prs or nrl ? i think it is same price or even less , it is nice to see one build for you and test it in video , great information and great videos .

Thanks for awesome video. Could you please make some video about Tikka T1X? It is worse than Bergara/CZ or just all of them need more ore less work to be a tack driver? Thanks

Great video, thanks ! Where did you get those targets ? (MOA in 1/4 increments @ 100 Yards) They are an efficient use of space, I like em but my searching has come up with nothing...

I wanted to thank you very much for your video. I am especially interested in your opinions of different ammunition and the mechanics of equipment. I am an accuracy "nut" that is a bit on the frugal side meaning I don't realize the same success as competition shooters. The question I'm constantly asking myself is where do I draw the satisfaction line in equipment and components based on investment; that is where your opinions aid me greatly.