Here's what ya do with out-of-control idjits, whether it's your tent opening or your front door at 2 a.m.:
Throw a cup of boiling hot coffee in his face, and then when he's screamin' like a beeatch 'cause his eyeballs are melting
... you junk-punch has ass into next week.
Problem solved. No need for gunfire. Waste of ammo avoided.