I definitely learned something today - thanks :). Is the change due to the parts getting broke in?
I may try one round of my Wolf 55 grain just to see if it will lock back…even though I hate the thought of one of those dirty rounds running through it :D.
FYI - I was referencing the graph in this thread when referring to the 4:30 pattern being borderline:
I believe it is a combination after 500 rounds every thing is broken in. After that gas port erosion will be the other culprit. My rifle started out ejecting xm193 at the 4-4:30 position I am just over 3000 rounds and xm193 ejects at 3:00 now. I run LMT enh BCG, H-buffer , and the sprinco tactical buffer spring [blue].
Once it starts ejecting at 2:30 I will install an H-2 buffer to slow it back down some and after that it should be time for a new barrel.
I got my Grant built DD lower on Saturday. I got the Colt LPK and Magpul UBR installed. It’s mated with my Noveske middie (basic with FSB and SWS rail). I haven’t had a chance to take it to the range yet, but I’m very impressed with the build quality. My setup is heavy and very solid. I like heavy rifles (yeah I know, I’m gonna feel the pain in a carbine course - no pain no gain :D) I could easily butt stroke some one, or use it as a club.
The only issue I have had is it will not drop my pmags.
