Hangfires
Now let's talk for a second about what this could be if it weren't a fake. Someone mentioned a hangfire, which is something I haven't even thought about in years. Let's say I'm firing at targets like he was, and the hammer drops. While I'm too smart too look down the barrel, I'm not too smart to forget to the proper hangfire drill - keep the weapon pointed at the target for 30 whole seconds! I'm sure I'd give up after five seconds or so ... assuming I didn't operate the action and eject the live round immediately after dropping the hammer, out of sheer habit.
So the q is: what happens when you eject a hangfiring shell onto the ground and it decides to wake up and go to work? Burning, at least. Explosion? Bits of of wad in my sock or pellets in my throat?? I know hangfires are rare but this is something I need to know more about.