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Posted: 5/6/2009 11:34:53 AM EDT
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I have an interesting problem with my home built dpms lower, M&A parts upper Mforgery.
Shot it today, and after about 75 rounds (which chewed out a nice tight circle at 50 yards), I got a misfire. I dropped the mag out and tried to clear it but could not pull back the charging handle using all the force I could muster. So now I have a rifle jammed with a live round The ammo was 5.56 nato made in Greece. I have shot this ammo before in other guns with middling reliability but never this type of problem This is my second build of a DPMS lower and my second M&A upper. No problems with the other one. I am thinking tight chamber/out of spec cartridge plus hard primer/weak hammer strike plus not enough lube. Of course I am treating this like the loaded gun it is. My plan is to remove the scope and then apply some mechanical force to the charging handle. Anybody have experience with this or good ideas about the best way to put some rearward force on the charging handle. (Yes I will be sure to do this with the gun pointed in a safe direction while wearing eye and ear protection). Anybody have any better ideas for clearing the gun. Any theories about the source of the problem or experience with this type of problem. Thanks |
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Slam the butt of the weapon on the ground (collapse the stock first) while pulling back on the charging handle.
Clean the barrel thoroughly afterwards and consider having the chamber dimensions checked and/or ream the chamber. Also, lube the weapon and replace the extractor spring. |
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Quoted:
Collapse stock if applicable. While pulling on charging handle, strike butt stock on hard surface (i.e. Ground, wooden bench, not concrete). Round should come right out. ETA. Beaten to the punch. +1 It sounds like you may have a primer stuck in the locking lugs. That can lock a rifle up tight. 5.56mm ammo in a .223 chamber. Resulting blown primer results in primers finding their way into all kinds of fun places. |
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Dang. I thought this would be a more interesting problem than that. You were right. The unfired round popped right out. Thanks.
The case was discolored (like a thin layer of soot on it). No evidence of a firing pin strike on the primer. As I think about it, I can't recall whether the trigger released on the round or not. The unmarked primer suggests no. What would explain that? Also, regarding the Olympic ammo. What is your experience with it. I bought it years ago for 160 per 1000 (remember those days). The brass seems ok to me. Anybody had experience reloading it. |
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