I would've tracked down a Range or Safety Officer, no matter how many doors I had to kick open to find them and demand they discipline him. When it comes to someone stealing my property and my time while acting like an idiot, I turn into a first-class *ssh*le. If you let them get away with it they will just keep doing it. As an afterthought, I'd report him, the incident and the officer I spoke to in a letter t the owner and expect action. Crossfire like that can endanger range workers or, in some cases, civilians.
If you make it absolute Hell for everyone involved, they will take safety more seriously and will know to NEVER mess with you again.
“Malo periculosam, libertatem quam quietam servitutem." (I prefer the tumult of liberty to the quiet of servitude.). Thomas Jefferson
"All that is necessary for the triumph of evil is that good men do nothing."
-Edmund Burke, Loosely translated from Thoughts on the Cause of Present Discontents. (1770)