Thread: Subsonic 300BLK Noise levels

Originally Posted by clavulanate

I adjusted my gas block today starting from completely closed to locking back on an empty mag + an extra 1/4 turn for safety and there was no discernible change in sound. As for ejection distance I would say ~1-1.5 metres?

Yeah that sounds good 1-1.5 metres doesn't sound over-gassed so your setting is ok for the block. Maybe the Waitaki suppressor is designed for tasking the boom out of super sonic rounds and not fully silence subs? You can ask them. Some suppressors like my NEA Mini-Can are not really designed to make subs super quiet. MY MAE is heavy but does both extremely well. It has a bit of a chamber after the muzzle (over barrel) that lets the super sonic gas expand a bit before hitting the baffles. It sounds like the gas is still supersonic out of your one. Both the bullet and gas can make a cracking noise, you have to slow down both. At least that is what I understand...