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  #16  
Old 05-10-2021, 06:29 AM
steverl

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I don’t have much room to talk as I only have one 457 (Premium) and one 452 Ultra Lux. Use both five and ten round steel/polymers. Neither have ever given me problems, first or last round or anything in between. Eats what I feed em and spits em out.
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  #17  
Old 05-10-2021, 06:29 AM
Mythbuster

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Mine is 100% reliable.
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  #18  
Old 05-10-2021, 06:37 AM
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I had a few failure to eject on the first day with my new 457 but in my case it was user error. New to shooting I was hesitant when pulling the bolt back, along with a brand new bolt that was still a little stiff, but quickly realized that even just a steady pull resolved the problem. No issues since then and lots of rounds through the CZ. I know this may not be your case but thought I would toss it out there.
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  #19  
Old 05-10-2021, 09:12 AM
old 39

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This seems to be a problem that affects some rifles and not others. My 452 ejects the first four with some force but seldom ejects the fifth. You have to flick the bolt back with your fingers to have half a chance of ejection. The same 452 will extract rounds but will not eject them at all if you use metal magazines.

My 455 ejects all five flawlessly. It will not eject at all if the magazine is removed.

Your results may vary.
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  #20  
Old 05-10-2021, 09:40 AM
Mark1964
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My 457 Varmint, which I'm running out of a Oryx chassis, does the exact same thing that the OP described about 50 percent of the time.
The empty either falls straight down and out the mag well when I remove the mag or I have to lift the gun from the bench slightly and roll my wrist to the right to get it to drop out the side.
Considering our match times are generous and the gun is running right alongside some far more expensive rifles and giving a good showing, I just live with it.
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  #21  
Old 05-10-2021, 09:59 AM
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Originally Posted by gmd1950 View Post
Except that none of my five 457's does it.
Likewise, none of my three 457s do this, and I have about 30 magazines in total - a mix of 5s and 10s, plus a couple of 25s that are mostly used with my 512s.

I believe there was an issue with some CZ mags that had been assembled with the spring installed backwards. I don't remember the exact symptom that caused, but it might be worth some research, and a check of your mags. Disassembly is easy and I think there's info on CZ-USA's website.
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  #22  
Old 05-10-2021, 10:17 AM
steverl

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Just finished shooting both my 457 and 452. No problems with either one. I do cock and eject the bolt with some authority if that may make a difference.

Last edited by steverl; 05-10-2021 at 10:20 AM.
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  #23  
Old 05-10-2021, 10:45 AM
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Originally Posted by Mark1964 View Post
My 457 Varmint, which I'm running out of a Oryx chassis, does the exact same thing that the OP described about 50 percent of the time.
Did it happen with the stock chassis?
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  #24  
Old 05-10-2021, 11:26 AM
Mark1964
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Originally Posted by tlbj6142 View Post
Did it happen with the stock chassis?
Don't know; came in a standard wooden sporter stock, and I've never fired a round from it in that setup. Bought it with express intent to run in a chassis from the bench for long-range matches.
Have I seen this in other 457s run out of a chassis or a Boyd stock?
Yep, occasionally have seen it white spotting or scoring. I'd say it occurs in from a third to half of those rigs I've seen.
In other words, I don't think the OP has an imaginary or uncommon problem.
As I said, I'm not awfully worried about it. The amount of accuracy I'm getting from a $500 rifle ($900 if you count the cost of the chassis) as compared to an Annie or Vudoo ... I'll live with the slight problem. It's slightly annoying, not costing me targets.
Would I like an Annie or a Vudoo? Yep. Am I willing to drop the approx $3K for what I'd like? Nope, not at this moment, though I hope to one of these days.
(BTW, I have a dozen of the synthetic mags, and I don't think it's a mag problem.)

Last edited by Mark1964; 05-10-2021 at 11:28 AM.
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  #25  
Old 05-10-2021, 02:11 PM
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I took mine out again today and tried ejecting rounds after firing and then removing the magazine. They all extracted fine but dropped out the bottom rather than ejecting when the mags were removed. Three different 10 round polymer mags bought from two different places. It extracts and ejects all 10 rounds just fine with the mags in place. I had to do some adjusting on the mag followers when I had a different barrel on mine. It wouldn’t eject the last round with that barrel. Adjusting the rear end of the followers higher helped but didn't eliminate the issue. Problem went away when I changed barrels so I had no need to play with them anymore. I had a 5 round polymer mag that worked flawlessly so I just tried to adjust the 10 rounders so the follower sat in the same position. They were all 3 a lot lower in the rear than my 5 rounder. Maybe some tolerance stacking with some followers not quite right?
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  #26  
Old 05-10-2021, 02:13 PM
dougha5

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And they were assembled correctly. I bent the tab at the rear to allow the rear of the follower to rise higher.
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  #27  
Old 05-10-2021, 02:32 PM
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The mag in front is the 5 rounder that ejected fine. The mag in the rear is how all three of my 10 rounders looked as they came from CZ.
Attached Images
File Type: jpeg 019D666D-6434-4F33-9B13-588E3A394459.jpeg (438.6 KB, 11 views)
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  #28  
Old 05-10-2021, 03:51 PM
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Originally Posted by dougha5 View Post
The mag in front is the 5 rounder that ejected fine. The mag in the rear is how all three of my 10 rounders looked as they came from CZ.
Front? Rear? On my PC they are side by side. The one with the flush follower is on the right and the angled follower is on the left. Which one worked?
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  #29  
Old 05-10-2021, 04:27 PM
dougha5

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Sorry. The flush follower worked. I don’t think that’s necessarily the definitive answer but I’m pretty sure it plays a part.

Last edited by dougha5; 05-10-2021 at 04:41 PM.
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  #30  
Old 05-10-2021, 09:26 PM
Griff557

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Originally Posted by dougha5 View Post
Sorry. The flush follower worked. I don’t think that’s necessarily the definitive answer but I’m pretty sure it plays a part.
Interesting...I’ll give it a try-should be a easy test
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