I guess my view is that when you have a gun in your hands, regardless of the situation, you are responsible. I keep seeing that "the rules are different on set", but I was taught in all the courses and trainings I have ever taken that you ALWAYS treat a gun as if it is loaded, and you ALWAYS confirm for YOURSELF that is is not. NEVER take anyone else's word for it. Ever. I don't care if I'm an actor on a set, if I am handed a gun, I'm confirming that it is not loaded, and if there are "rounds" in chamber or magazine, I'm confirming myself that they are blanks. I guess that's just what's I've been taught - and what makes sense. I'd never take someone else's word - even if they are supposed to be an arms expert for that reason.