I've been in a few small rooms when small arms went off. REALLY gets your attention. I had just bought a .22 rifle, can't remember the brand, but it was an auto loader. Wanted to see how many the tube would hold, so with my sons all around me, we dropped in 16 long rifle rounds. I aimed it at the living room floor and chambered "one". The round, along with the other 15 emptied full auto. My oldest son looked at me and asked if there was a quieter way to count them. I explained that wasn't suposed to happen. Luckly no wires or pipes hit in the basement, not to mention, no children shot full of holes. Gave me many a nightmare.
Years before that, in college, we had a house trailer off campus (in Kansas) and everyone had guns sitting around. Bunch of guys sitting on the couch watching a western and one of them grabs a marlin 30-30 lever action from the corner and aims at the tv to shoot the bad guy. We all chipped in to buy a new tv. (that one was really loud).
Anyway, keep your finger off the trigger.