I was at Bass Pro one day standing next to a guy who was looking at bows. He was drawing one backwhen he accidently released it, at full draw. It scared the hell out of me. It sounded like a rifle going off. Needless to say the salesmen were pretty pissed off. In some places if you dry fire a bow, you buy it.
That happened at are proshop here.A guy dry fireda bow, scared the crap out of everyone except the owner. He was cutting arrows and never heard him. After he was done cutting the arrows the guy came up to him and asked what if someone dry fires a bow, he said you will end up buying it, the guy walked out of the store.
I guess it didn't help that the owner is kinda on the old side with hearing aids.