1. Okay, if dozens of guns were to fire within a room the size of the average bar, would everyone in experience severe ear damage from the immense noise? The guns include two .45s, three 12 guage shotgun, four 9mm machine pistols, and three assault rifles chambered in 7.62mm. None of the weapons are suppressed, and no one is wearing ear protection. 2. Does it take significantly less time to pull the trigger on a hair trigger than a normal one? 3. If guns are fired in a closed room, i.e. the door and windows are closed, would the sound still be heard outside? The number and calibar of firearms is in the first question. I'm wondering all of this in relation to the beginning of a story involving firearms.