Bolt wont close when round is in the chamber
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Thread: Bolt wont close when round is in the chamber

  1. #1
    Newbie Sixgill's Avatar
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    Bolt wont close when round is in the chamber

    Hi there,

    I am looking for some input please. I have purchased the 7.62 x 39 caliber conversion kit. It dropped into my rifle like a charm and cycled with no issues.

    I took it out to the range and the bolt refused to close when i attempted to chamber a round.

    So i brought it back home and took everything apart. When i place the bolt into the end of the barrel on an empty chamber the bolt locking lugs are able to rotate and lock the bolt closed as it should. When i place a round into the chamber the round prevents the bolt from entering far enough into the barrel so that it can rotate and lock.

    Is this a head space issue ?


    Cartridge in barrel chamber


    Cartridge in barrel chamber


    Bolt meshed with barrel on empty chamber


    Bolt rotated (locked) on empty chamber


  2. #2
    XCR Guru ny32182's Avatar
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    Re: Bolt wont close when round is in the chamber

    Does it happen with all ammo, or just that batch, and/or individual cartridge?

  3. #3
    Super Moderator Underground's Avatar
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    Re: Bolt wont close when round is in the chamber

    Does the cartridge seat ok in just the bolt face? i.e. Are you sure you have a 7.62x39 bolt in there?



    That guy, he said I should be oblong and have my knees removed. But I don't trust him, he plays the banjo.

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  5. #4
    Newbie timou's Avatar
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    Re: Bolt wont close when round is in the chamber

    You did change the bolt - right?

  6. #5
    Newbie Sixgill's Avatar
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    Re: Bolt wont close when round is in the chamber

    Cartridge seems to sit fine on bolt face.

    I have tried 2 different lots of ammunition, both are steel casings.





    I am located up in Canada is sending the barrel back to Robinson is a major Pain due to border issues.

    Are there any measurements i should be taking to narrow down the issue ?

  7. #6
    XCR Guru Sean K.'s Avatar
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    Re: Bolt wont close when round is in the chamber

    Get a go/no-go gauge???

    Just guessing.

    Sean
    "Necessity is the plea for every infringement of human liberty. It is the argument of tyrants; the creed of slaves."-William Pitt the Younger

  8. #7
    Super Moderator Underground's Avatar
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    Re: Bolt wont close when round is in the chamber

    Yeah, that sounds like it's probably a headspace issue then. Maybe find a local shop or smith that has some gauges if you don't have that caliber. It's a quick check.

    I haven't had to ship any firearms or parts back and forth across the border, but I don't envy you the hassle that must be.



    That guy, he said I should be oblong and have my knees removed. But I don't trust him, he plays the banjo.

  9. #8
    Newbie Sixgill's Avatar
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    Re: Bolt wont close when round is in the chamber

    If it does turn out to be a headspace issue how would i go about adjusting that ?

  10. #9
    XCR Guru dont_tread_on_me's Avatar
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    Re: Bolt wont close when round is in the chamber

    It depends on the rifle,but in your case you may be able to have a gunsmith ream the chamber.However since the bore is chromed then the chamber should be too and I'm not sure if there is a way to re-chrome it properly after re-cutting the chamber.You may need a new barrel,but first you need to check the headspace.It may be cheaper for them to just send you a new barrel because if that happened to me the company that made the barrel would get the gunsmith bill as well as paying to and from shipping.



    War is an ugly thing, but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks nothing worth a war, is worse.... A man who has nothing which he is willing to fight for, nothing which he cares more about than he does about his personal safety, is a miserable creature who has no chance of being free, unless made and kept so by the exertions of better men than himself.----John Stuart Mill

  11. #10
    XCR Guru WatchoutforStobor's Avatar
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    Re: Bolt wont close when round is in the chamber

    Quote Originally Posted by Sean K. View Post
    Get a go/no-go gauge for Robinson Arms.

    Sean
    There fixed it.


    Sixgill, it really sucks that you got your new kit and it's not working for you. I think they will make it right but I know how frustrating it can be. PM or email Terra, she will know what to do.

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