So a friend sold me 1k plated 308 150gn bullets for cheap and I figure I'd play with it for subsonic ammo. Started off at 10.5gn trail boss, then 10gn, 9.5gn and 9gn. All were 5 shot groups each. Anyway, each group had all stabilize but 1. 16.25 barrel 1:11 twist From left to right...