Slamfire in my DPMS

[mrmackc]

The force and inertia of the bcg and the bolt it self slamming into battery in a loosely held DPMS rifle puts some forward moving inertia on the spring loaded hammer that must be contained by the sear. Fiddling around such as stoneing the surfaces of a factory installed trigger ,sear,and hammer surfaces can cause unseen problems.

[washguy]

Sandog    put a new trigger in it and your probs should go away  :) Wash

[sandog]

I appreciate all the replies, especially your's, survivalshop. Most everyone else suspects the FCG, I will say again: I did not even go near the engagement notches, and only gave the other parts mentioned a few seconds buffing with a felt bob and polishing compound. What I did do that was stupid was letting the bolt/carrier slam forward on a hand fed round. And believing someone else who told me that Winchester primers were some of the hardest and least sensitive out there. I guess that might have been true back when they still had nickel cups. I have used Winchester LR primers in my R-25 in .243 for 500 rounds now, and have not had a problem, but with the .243 I don't recall ever letting the bolt forward on a round that was already in the chamber, no magazine present to slow the bolt. The  trigger in the DPMS .308 is functioning fine, no doubles, hammer following, etc. 

I am getting 1000 rounds of primed (Mil-Spec primers) Lake City 7.62 brass next week, and when it comes time to reload it, I will be using CCI #34 or 250 primers.  

[sketch]

Will you single lode these as well? I would but ( be safe man)!!

[N Jensen]

I think everyone gave you some very good advice. The only thing I could add is to check the firing pin to see if it is below flush of the bolt face when it is still fully fwd. Before the cam retracts into the carrier.

 

It should below the face and not just even with the face. I have heard of long firing pins and he had several slam fires before figuring it out.

 

I load single rounds a lot about 40 or so during a match, but never had a slam fire.