New SBR, short stroking/picky on ammo *update*
So I built a new SBR, its about the 9th build I have done. I tested it with M855 and it has run flawless. I am prepping this to be my dedicated gun and plan on running it in some courses in April. In prep for this course I picked up 1k of Fiocchi 62gr to try out and probably run since I can get it reletively cheap. I also bought a Spikes T-2 buffer. The upper is a Noveske 10.5" CQB, I bought 2 of these at seperate times, one NIB and this one was never fired but had been mounted, the pin channel had a little gouge from being removed or mounted from previous owner, nothing else. I sold the other one.
Range trip 1: T-2 buffer and Fiocchi. Stovepipes, FTF, and no bolt hold open.
Range Trip 2: H-1 buffer and Fiocchi, pretty much the same results with a little better reliability as far as jams go.
Range Trip 3: carbine buffer, no jams with Fiocchi but no bolt hold open. Also tried the following ammo for bolt hold open capability:
Fiocchi 62gr: BHO failure
Fiocchi 77gr SMK: BHO failure
Wolf 75gr: BHO failure
PRVI M855: BHO success
PRVI 69gr match: BHO success
Hornady 75gr match: BHO success.
so now I am at my ends, looking towards gearing up another rifle, wondering if I should send off the upper to check allignment and/or bore out the gas port and hope it comes back in time. Then I looked at my other rifles and considered 2 things, a Young Light carrier (didnt like the idea of that for a fighting rifle), or a LMT enhanced carrier (which I think I am going to try).
What should I do, would (if it worked) swapping the carrier just be working around the problem or if it works with a different carrier then there wouldn't really be a problem?