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Thread: CZ452 stiff bolt

  1. #1
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    CZ452 stiff bolt

    My CZ 452 .22 has developed a stiff bolt, and the friction seems to be increasing the more I shoot it. It's really smooth sliding, but to actually cock it takes a lot of downward pressure.
    What might be the problem?

  2. #2
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    Have you had the bolt apart for a squiz?
    Nothing binding or gumming it up with some light lubrication

  3. #3
    Member HNTMAD's Avatar
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    Reloads or factory?

    Sent from my SM-S911B using Tapatalk
    Hamish
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  4. #4
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    I havent pulled the bolt apart yet. About to give it a try

    People reload .22??
    Carbine, tetawa, Joe_90 and 1 others like this.

  5. #5
    Member HNTMAD's Avatar
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    Quote Originally Posted by Brad S View Post
    I havent pulled the bolt apart yet. About to give it a try

    People reload .22??
    Sorry...didnt see .22 assumed centre fire....as you were

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    Brad S likes this.
    Hamish
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  6. #6
    Member PaulNZ's Avatar
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    Quote Originally Posted by Brad S View Post
    My CZ 452 .22 has developed a stiff bolt, and the friction seems to be increasing the more I shoot it. It's really smooth sliding, but to actually cock it takes a lot of downward pressure.
    What might be the problem?
    CZ452 cocks on opening, so taking a lot of downwards pressure doesn't sound like a cocking problem.
    Grey Kiwi likes this.

  7. #7
    Rabbit Herder StrikerNZ's Avatar
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    Give the shoulder of the chamber and inside of the action a good clean, might be a build-up of detritus somewhere in there that the bolt is working against..
    rugerman, 57jl, Shamus_ and 2 others like this.

  8. #8
    Member Hermitage's Avatar
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    Quote Originally Posted by StrikerNZ View Post
    Give the shoulder of the chamber and inside of the action a good clean, might be a build-up of detritus somewhere in there that the bolt is working against..
    ...also when cleaning the chamber with a bronze brush, remember to go forward into the throat area as a strong carbon ring can form which can cause difficult bolt closure.
    rugerman likes this.
    A good job and a good wife has been the ruin of many a good hunter.

  9. #9
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    Okay, so I pulled the bolt to bits, and took an embarrassingly long time to figure out how to put it back together. That all looked fine, a bit of lube hasn't made any difference there

    I'll see if I can find any stuff to clean out in the action
    csmiffy likes this.

  10. #10
    Member Micky Duck's Avatar
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    Muzzle down.big squirt of CRC down barrel to loosen up any crud in chamber area if you have cleaning rod etc give it gentle clean through barrel too. Pretty hard to clean chamber and not barrel.
    75/15/10 black powder matters

  11. #11
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    Had a good poke around and found a few bits of carbon to remove. Seems a little bit happier now. Still not smooth, but no longer as irritating
    Micky Duck likes this.

  12. #12
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    CZ452 stiff bolt

    Clean out the recesses on either side of the chamber where the extractors grasp the rim as well.

    A earbud and a bit of solvent. Also clear the bolt face and extractors.


    Sent from my iPhone using Tapatalk

  13. #13
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    Yes there was a bit of stuff in those recesses.
    I've put 500 rounds through it since I bought it. And who knows how many rounds @viper put through it before I bought it off him without cleaning it.
    Seems alright ish now. I'll take it with me next time I visit the local gun shop and see what they reckon

  14. #14
    Member viper's Avatar
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    Hi Brad, sorry I am now based in Australia and have only just seen the post. The CZ would have been lucky to have had more than 500 rounds through it. It has always had a tight chamber. Wax / fouling build up could be the problem. Give it a good clean and retry putting some rounds through it.
    Brad S likes this.

  15. #15
    MB
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    Have you tried different ammo? I like CCI Subsonic and so does my rifle, but had a bad batch once. Experienced the problems you described plus a few misfires and poor accuracy. Happy to see that box go.

 

 

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