It looked like with the SUBSONIC bullet, there are still supersonic waves due to the particulates and the air moving out from in front of the bullet. I wonder if they tested one at 1000fps vs 850fps how different it would look, and if that would translate to a reduction in noise at all (due to the powder variation, that would have to be excluded some how). Probably not, as it’s happening so fast the sounds blend together, but it’s interesting to think about
It also sucks that the people who watch his videos complained enough he had to put a “I’m not glorifying guns” disclaimer out there. The so called intellectuals can’t let go of anything...they see a gun and freak out.