The crack of a bullet passing overhead is the sonic "boom" of the bullet. Small missile, small sound signature.
I put a couple of boxes of .308 through a suppressed bolt action and it was MUCH more comfortable to shoot on the covered range I shoot at. The galvanized steel roof reflects so much sound back down on you it almost hurts. The concussion of the sound was absent, and I felt like I could shoot it all day.
I've read that the rifles used for stag hunting in Scotland are suppressed to preserve the ghillie's hearing.
