OK I have been missing around with a 300BO, Ar15. I have been trying to get it to function correctly. Here is what I have so far. I have tried H110 with 203gr bullets, H4198 with 203gr bullets, and AA1680 with 203gr bullets. I have pistol length gas system, adjustable gas block opened fully, 1/8 gas hole on the barrel. I also just got a new toy, Hybrid suppressor. I have tried a 300BO buffer spring, that let the rifle cycle, but it did not have enough spring to pick up the next round and chamber it.
I thought that the suppressor would create enough pressure to allow the rifle to cycle, but no luck. If I go up any on the powder charge, the rounds go supersonic. Any ideas?? What else can I try?
I thought that the suppressor would create enough pressure to allow the rifle to cycle, but no luck. If I go up any on the powder charge, the rounds go supersonic. Any ideas?? What else can I try?