At this point I’ve never quite “got” the suppressor for a rifle thing. I mean most any rifle fires a bullet at supersonic velocity. As such, there WILL be a loud crack when said bullet break the sound barrier. Doesn’t matter what the propellent is, bullet alone makes a loud noise. In addition, Most suppressors will killed db or so-But a rifle will be around 140, so a reduction still leaves a sound pressure wave of 100 bd or so (loud enough that hearing protection is required in an industrial environment). Given the above, “why” is a suppressor on a rifle a hot thing? Seriously Why? Inquiring minds want to know. I know a subsonic .300 Blackout can be pretty quiet, as can subsonic 9’s and .22’s, but every other rifle I’ve seen fired, even with a suppressor, is loud.