I need some of the knowledge from the great folks here. I built a heavy barreled ar-15 in 5.56 with a white oak armament 2o inch barrel, then had it threaded and had the SAS brake put on so I can run my SAS suppressor. I was shooting it and the groups were great 1MOA or less, if I would exclude this weird one random flier that would be 8 inches low and to the left. It seems to be the first round, but not sure when it is happening due to I was shooting at 200 yards. Oh and I was using Hornady 75 grain match rounds. I do not have an adjustable gas block (hoping to avoid putting on on) and I’m running a H2 buffer. What could be causing this? Do you think I should try to run a H3 buffer to increase the dwell time? I plan to use the gun for varmints, coyotes and maybe a match. Any advice would be great?