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Need advice and ideas from pistol tinkerers.

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  • Need advice and ideas from pistol tinkerers.

    New double stack 9mm with all new magazines, have found that when feeding the bullet seems to hit a bit low on the feed ramp, this causing a noticeable "bump" during the feed cycle. This isn't bad enough to cause malfunctions so far but from my experience, a pistol should feed smoother than this one. Am I looking at a magazine feed lip issue or possibly an extractor issue? Any idea how to smooth the feed cycle would be appreciated. Feed ramp has been polished, this didn't help any.
    "some people never let their given word interfere if something they want comes along"
    The real problem with the world are laws preventing culling.

  • #2
    Re: Need advice and ideas from pistol tinkerers.

    Does it do this with one magazine, or with all? Cheapest fix is to try a different quality magazine, then move on to other fix's.
    "SI *VIS *PACEM, *PARA *BELLUM"
    http://survivalblog.com
    MOLON LABE!
    AC0XV

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    • #3
      Re: Need advice and ideas from pistol tinkerers.

      What 9mm pistol are we talking about?
      Peace Through Strength, Victory Through Devastation...Strategic Air Command

      American by birth, made from German parts from Emmingen, Baden-Württemberg

      An unhappy German is a Sour Kraut!

      Das Leben ist zu kurz, um billiges Bier zu trinken!

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      • #4
        Re: Need advice and ideas from pistol tinkerers.

        Four magazines, all do the same to a large degree, M & P full size 9mm. Thanks for the replies, not been able to get on here for two days, not sure why this happened. I suspect my ISP.
        "some people never let their given word interfere if something they want comes along"
        The real problem with the world are laws preventing culling.

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        • #5
          Re: Need advice and ideas from pistol tinkerers.

          First step is to try a different brand/type of ammo.

          Look at a hollow point that has a more rounded nose.
          Some guns just don't "like" some ammo.

          Is the gun broken in?
          If not give it a couple of hundred rounds to settle down.

          Is the gun clean and properly lubed?
          Factory lube is mostly to preserve during shipping, not for use as a working lube. Clean it off and re-lube with your favorite.
          Don't forget to disassemble and clean the magazines too.

          Is the feed ramp reasonably smooth?
          All it needs is to not have machine marks that can catch a bullet nose.
          It DOES NOT need to be polished like a mirror, and doing so can ruin a barrel.

          Is the slide breech face reasonably smooth and without any machine marks or other defects that can cause the case not to slide up under the extractor?

          Is the extractor cleaned of factory grease or debris, and are the edges too sharp and catching the case?

          Last, if you just can't see anything obvious, DO NOT start "polishing" anything and risk voiding the factory warranty.
          Contact S&W and have them send you a shipping label or pick up notice and ship it back to them along with a short note explaining the problem.
          They're the experts and they should correct any problems.

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          • #6
            Re: Need advice and ideas from pistol tinkerers.

            I have experienced this problem several times. Since you have the problem with all mags I think it is the extractor.
            Guido

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