Down here we have plenty of trash problems out and about, but it has nothing to do with shooters that I've seen any evidence of.
Some of the pasts more popular dumping sites did turn in to shooting areas, but they have all been gated off, and are now a thing of the past.
We recently purchased some timber property, and even though I've been cussing timber company gates for years, we put up our own first gate yesterday, as a first order of business. The second order of business will to spend a few days, and I'm guessing approx $600-1K in dump fees, along with a few guys wages, gas, etc., to get rid of what has been dumped there over the past few decades by LCR asshats.
Plenty of trash, but I didn't see any bullet holes in any of it.
ETA, I meant to point out that I think there are two seperate issues. Asshats & their trash, and shooters who are asshats.