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  #1  
Old 01-15-2021, 07:49 PM
Jtcole

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Cz457 Mtr problems.



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Hey guys anybody have any problems with the 457 de-cocking when closing the bolt? Just purchased the rifle a couple weeks ago waiting on optic to come in so have yet to actually fire the rifle. Iv Adjusted the trigger down to just under a 2lbs. Was messing around with it a little just getting a feel for the rifle but now when I run the bolt and go to actually close the bolt about half way closed it is de-cocking. At first if I closed the bolt slow it was fine but on a hard close it would de-cock. Now however it doesn’t matter how you close the bolt the trigger is not set. Like I said Iv yet to fire the rifle but I can only assume that upon closing the bolt if it had one in the chamber it would go bang without me pulling the trigger. Just curious if it’s a common problem that could be an easy fix or if I’m more then likely going to be sending it back to cz? Any input would be great thanks in advance!
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  #2  
Old 01-15-2021, 08:08 PM
edrabara

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It happened to me once. Check your pre-travel settings (part #49 aka sear engagement). You may have set it too low.

You did run the bump test before you reassembled the rifle, right?

HTH, Ed
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Old 01-15-2021, 08:30 PM
Dinola

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Its not 'decocking' - its firing.
As said, you need to adjust the trigger and do a bump test.. Web instructions are pretty good on this stuff.
You have hit the limit of the factory trigger adjustment and went just a bit too far.
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  #4  
Old 01-15-2021, 08:57 PM
KB22RF

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Had that problem. I added a smidge to the trigger weight and it solved the problem.
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  #5  
Old 01-15-2021, 09:18 PM
cznut is online now

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Sear adjustment is needed
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  #6  
Old 01-15-2021, 11:19 PM
Jtcole

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I did in fact give it the bump test...but just put about a half turn on the pre travel setting and problem seems to be resolved for now. thanks for all the input/help!
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