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Old 12-20-2019, 11:52 PM
BayouMD337

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Issue with CZ457 barrel play



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Hello. Just bought a new cz 457, came in this week. Have yet to fire it. I noticed there is slight play with the end of the barrel in the stock. I can move it left and right and it will stay either left or right touching stock. I can also try and center it and it will stay. My concern is barrel moves , I have never had this issue before with any of my rifles. Do you think this is a manufacturing problem that should be covered under warranty, like improper bedding? Do you think I should just tighten action screws to a higher torque? Have you ever heard of this happening before? I have been excited for my cz and dumped a lot of money into a scope , rail, bipod , etc but am now worried there is something wrong with the firearm. Any advice would be appreciated.
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Old 12-21-2019, 01:02 AM
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Not sure which CZ 457 you have but this can be somewhat normal for the Pro Varmint. There are 2 issues here 1. is the stock is not bedded to the action. 2. the stock is not properly torqued with the action screws. To resolve these issues the action will need to be properly glass bedded and the screws will need to be torqued. You can also insert pillars if you have the ability and equipment.

After you have it bedded then start torquing the screws at 20 inch pounds and move up to 40 inch pounds in 5 inch lb steps. Shoot the rifle at the same time and you should find a tuned area where the rifle shoots the best and stay with that torque setting. With this rifle the effort is very much worth the time. These rifles seem to like SK and Lapua ammunition the best.

A number of the other 457's have pillars in them already and just need to be torqued properly.

Last edited by cz453; 12-21-2019 at 01:14 AM.
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Old 12-21-2019, 01:04 AM
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First thought would be are the action screws torqued? Also, would definitely benefit from bedding.

Not necessarily anything wrong with the rifle or the stock for that matter - just manufacturing tolerances.

Regards,
Dicko.
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Old 12-21-2019, 01:53 AM
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I would start by checking for proper action screw torque. Im not sure what CZ recommends for the 457 but on the 455 its 25 in/lbs.
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Old 12-21-2019, 03:39 AM
jqar45
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I had the same "problem" with my 457 PV. Some of the PV's have pillars; mine did not. I ended up glass bedding as some have suggested. Accuracy is minutely better. Before bedding, the barrel liked to sit against the left side of the stock. I could center it and then drop the rifle on it's buttpad and the barrel would snap to the left. Now the barrel sits squarely in the stock with equal gaps left and right of the barrel, i.e. remains centered in the stock even if I hit the barrel with my palm. I bedded just the action and left the barrel free floating. I found my best accuracy was with the action screws torqued to about 32 inch pounds. I used Acraglass Gel, borrowed from an LGS I used to gunsmith at.
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Old 12-21-2019, 06:19 AM
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Thank you all for the comments. It’s a 457 Pro Varmint Suppressor Ready. Per the paperwork it came out of the factory earlier this month so at least it hasn't been sitting in a warehouse for a year and cz possibly adjusted some kinks with the initial release 457 models. I will start by checking action torque and go from there. Don’t really have the knowledge nor equipment to do bedding, maybe in the future, just never tried it before. I hope it all works out, excited to find out what it likes to shoot, I bought several brands of ammo. (Sk, Lapua, Eley, CCI, Norma). FYI the 419 Brand Rail is solid.

CZ 457 Pro Varmint
419 brand 11mm dovetail to Picatinny Rail
Vortex Viper PST Gen1 6-24x
Vortex Low Rings
Magpul Bipod
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Old 12-21-2019, 07:10 AM
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Read the sticky about tape bedding. And a little piece of bicycle inertube under the barrel at the sweet spot will work too! In no case over tighten the screws!
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Old 12-21-2019, 08:46 AM
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Originally Posted by Toomany22s View Post
Read the sticky about tape bedding. And a little piece of bicycle inertube under the barrel at the sweet spot will work too! In no case over tighten the screws!
^^^^^^ This usually shows an improvement in accuracy when you hit the sweet spot. Most all of my CZ 452's have pressure added to the fore end. All my Grand Finales like the rubber pad in them. One is still not been fired at the range due to really cold weather. My American and one Trainer have nothing added to the fore end and reacted negative to adding pressure. I don't have any that shoot better with torque over 22 inch pounds and like to stay away from higher torque to not compress the wood. Usually at 25 they opened up group size.
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Old 12-21-2019, 04:09 PM
BayouMD337

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Thanks for the reply. I have already dropped more money into this little project than I had expected but I’m hoping it’s worth it. I’m not the type of guy that will drop $600 on a rifle and then switch out the barrel and the trigger, lol or atleast not yet, as I have never had to. My savage fcp10 SR creedmoor is very accurate out of the box out to 600 yards so far (limit of my local range), so I’ve never had to tinker much, I’ve been spoiled. Back to rimfire, I was initially going to go with a ruger precisiůn rimfire, was at store for $399, came with rail, easier to get aftermarket parts, seemed functional, could walk out the store with one in less than 20 mins. The more I read these forums people started to comment on how accuracy was underwhelming in those “precision” rifles and before you know it I jumped on the CZ bandwagon. Ordered my first firearm online, rifle was off budsgunshop for $560, used my first FFL , all new experiences. Never thought I would get into precision long distance rimfire shooting but when my SW MP15-22 punched out a ragged hole at 50 yards using Norma Match, I new there was no going back and I wanted to start pushing rimfires out past 100,200.. enter my current CZ..I think in the long run I will be very pleased with my 457, just frustrated that I had a concern out of the box. who knows the barrel play may of been caused when I started to torque on the rail, rings, scope, bipod, time shall tell. Either way , I’m glad I pulled the trigger on a CZ, just hope the intricacies of having to tinker with it too much doesn’t become overwhelming and discouraging...after all , all I want is to just Be able to head down to the range and shoot some paper any free time I get.
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Old 12-21-2019, 04:32 PM
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Quote:
Originally Posted by BayouMD337 View Post
Thanks for the reply. I have already dropped more money into this little project than I had expected but Iím hoping itís worth it...I think in the long run I will be very pleased with my 457, just frustrated that I had a concern out of the box.... Either way , Iím glad I pulled the trigger on a CZ.....Be able to head down to the range and shoot some paper any free time I get.
Not to worry. Just adjust your torque slowly. My 457 PV SR gave me a 0.17" group at 25 yds on my first outing...I took it out of the box, ran a boresnake, and started shooting. I am confident you will find your PV to be extremely accurate, and fun to shoot! Best of luck. One of the hardest parts on bedding is just keeping epoxy out of the action! And if your barrel is centered in the stock, and will stay there, a little bit of barrel wiggle won't really matter, even without bedding.
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Old 12-21-2019, 11:35 PM
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Screw torque I have found that most people use way too much. My Anschutz 64S BR back when I had it, only needed about 12-14 in. lbs. Someone suggested starting at 20 on your rifle, which to me is way too high of a starting point, and going to 40 in. lbs. is insane. anything over 30 in. lbs. and you are crushing the wood on the stock, and basically making bedding out of the wood, which can still move. Start low.... 12 in. lbs. and work your way up.

I do not own or have not seen a 457 yet, but if your action screws are snugged to tight, and that barrel moves, then I would take it apart, and see if you can see it move where it goes into the receiver.
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Old 12-22-2019, 06:40 AM
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When I received my 457 at one the barrel moved freely from left to right. CZ recommends 31 inch pounds on the stock. When I received mine the screws were at about 5 inch pounds. I took them up to 20 inch pounds. The barrel did not move side to side any more.
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Old 12-24-2019, 02:17 PM
BayouMD337

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I sent my post to cz. They reported barrel is free floated, not bedded. Recommended I tightened action screws to 25lb, they didn’t seem too concerned.. will try it when back home.
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Old 12-24-2019, 02:49 PM
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Originally Posted by Stacker0943 View Post
When I received my 457 at one the barrel moved freely from left to right. CZ recommends 31 inch pounds on the stock. When I received mine the screws were at about 5 inch pounds. I took them up to 20 inch pounds. The barrel did not move side to side any more.
My Varmint AT-ONE action screws weren't even finger tight upon disassembly for cleaning before firing. Its fine now @ approx. 20"#s. It has a very generous float.
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Old 12-24-2019, 04:19 PM
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Originally Posted by Al the Infidel View Post
Quote:
Originally Posted by Stacker0943 View Post
When I received my 457 at one the barrel moved freely from left to right. CZ recommends 31 inch pounds on the stock. When I received mine the screws were at about 5 inch pounds. I took them up to 20 inch pounds. The barrel did not move side to side any more.
My Varmint AT-ONE action screws weren't even finger tight upon disassembly for cleaning before firing. <img src="https://www.rimfirecentral.com/forums/images/smilies/biggrin.gif" border="0" alt="" title="Big Grin" class="inlineimg" /> Its fine now @ approx. 20"#s. It has a very generous float.
My AT-one was the same way. Less than finger tight.
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