If you just throw a ball at someone I would not expect a break, so you're still in unless bounces countIf you drop a ball when loading and then tread on it are you out? I suggest no as the ball had not been fired but a Marshal finding the "hit" wouldn't know that. Following this logic, I would suggest a ball is not live until it leaves the barrel in which case a burst inside the barrel is not an elimination. If this is not the case then could you not just throw a ball at someone to eliminate them? Don't know the official answer to this, just putting the questions out there.
Game 1 of paintball sets the precident - squeezing a paintball between your fingers and squirting your target counts