Why would it be any louder? Hi pressure makes it louder? I thought it was just how much powder you burned and how big the bullet was that did that.
Think high pressure air escaping from a steam boiler vs low pressure air escaping from a flat tire. I'm guessing High pressure gas escaping from a rifle (80,000 psi vs about 62,000 psi) would make it louder if it's unsuppressed.
This could be a major deal breaker for many hunters in the field.
