I'm sure certain things are very frowned upon when handling new guns (that aren't yours) when you're looking at a store, like dry firing and so forth. So whats acceptable? I'd like to be able to check out the action, etc, but not if its going to piss off the guy working there. I probably won't buy anything tonight, but i'd like to hold 3-4 different guns to help me make up my mind. So whats acceptable/not acceptable?