Yessir, 3.2 gr is to be as quiet as possible and still cycle flawlessly. Anywhere from 3.2-3.6 is pretty common.My standard target load is an Xtreme 135 gr plated bullet over about 3.7gr of titegroup. It hovers at 1020 fps, well into subsonic territory. I don't shoot anything suppressed but I really like that projectile. It's around .3555 to .356 and also does well in the 38 super. Most probably run 147s and I know 3.3gr of titegroup with that weight is well liked by many.