Gun clubs have rules. Those rules are there for a reason, most for range safety. There are always those people who think that the rules don't apply to them and they can do what they like when they think no one is watching.
Idiots like this are the reason why gun clubs get shut down. It's easy to see the results of rule breaking when you see range facilities where jerks are shooting the waste barrels, the baffles, the signage, and even the roof.
Enjoy your felony you idiot!