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ruger 10/22 jams

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4 comments

  • Bunnell
    So I have this 10/22 that I put a carbon fiber bull barrell on and had some trigger work done to but the rounds tend to jam almost every time when using the bannana clips and once per 10 using the stock clips. Any Ideas?
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  • aerogenius1
    What kind of "jam" are you refering to? stovepipe? not extracting? not chambering next round?

    Need more information!
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  • heavyiron
    Hi Bunnell,

    Yes, I have several ideas.

    I have written about this topic before.

    The aftermarket bull barrels or target barrels have different chamber dimensions than the factory stand Ruger chamber. Ruger 10/22 barrels are cut with a standard SAAMI .22 reamer which cuts .062" too deep. Production speed machine reaming often leaves burrs in throat and chambers not concentric to bore. Aftermarket barrels have tighter, shorter chambers (sometimes too tight) than the SAAMI print but seldom short or concentric enough for maximum accuracy. These chambers are sometimes referred to as "Benz" chambers.

    The analogy being made here is similar to comparing the difference between a military configuration of the 1911 and the commerical accurized 1911. The military 1911 is machined with loose tolerances on the gun which improves reliablility but sacrifices some accuracy and the accurized 1911 with tight tolerances which improves accuracy but loses some reliability. The same is true when adding an aftermarket target barrel to your 10/22.

    The path of the cartridge in battery from the magazine into the chamber is more precise and more direct compared to the factory rifle. One of the weaknesses of the 10/22 is sloppy headspace and both the bolt carrier and chamber dimensions enter into this equation causing either or both FTF or FTE problems.

    Speculation would be that your problem is FTF reliably from the magazine. To correct this problem there are several things you could try. If you are using plastic lipped magazines those will probably have to abandoned. The plastic material and nature of the fit of these magazines will cause problems because the cartridge cannot be aligned properly to chamber.

    Only use high-quality steel lipped magazines. These are available in high-caps.

    Next, try breaking in your rifle chamber and feed path from the magazine. Try firing 500 to 1000 rounds from your rifle to wear some memory into the chamber. This may help smooth out and round any rough or sharp edges left over from when the barrel was machined.

    Try keeping the chamber oiled with a teflon based oil like Remington. Oil up a Q-tip and swab the inside of the chamber with a light coating.

    If it is a FTE, do the oiling and replace the factory extractor with an extra sharp extractor and over-powered spring.

    If none of the above is satisfactory, you may want to send the rifle to gunsmith specializing in 10/22s like:

    http://www.ct-precision.com/

    They should be instructed (if they don't know) to tighten up the headspace by recutting the chamber to proper dimensions and squaring the bolt carrier face to the chamber since the factory bolt carrier face is not square to the chamber. Also it may be that the barrel shank is not properly with the reciever and a good gunsmith can take care of this also.

    Regards,

    Heavyiron







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  • Bunnell
    thanks,

    I will try the above and if that doen't solve the problem them I will take it in to have it worked on.

    Bunnell
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