If that doesnt work than my only other idea which is pretty messed up is to leave some livestock back there and when they get hurt flip your lid and call the PD.
It is within your best interest to consult an attorney.
Maybe quietly drop off some crates of ammo at his range when no one is around?
LiveLeak.com - Spiked Ammo: Dirty Tricks in Syria's Civil War
(yes, thats both bold AND purple... Extra purple implied. Dont really try this)
^^^^^^^^^^THIS^^^^^^^^^^It is within your best interest to consult an attorney.
LOL, anyone with mom in their name I'm ready and willing to help! But really, 2 days is all I need!!!!!Wait...I have beer and some homemade hooch too!! Not any illegal hooch...just good stuff that warms you up on a cold day/night! It has medicinal purposes! I have shovels, backhoe, duct tape....maybe I do need to call the lawyer. Might need them for multiple reasons at this rate!
If i have a few hours to set up i'm game to wait until they come on the property and mess with them...
On that note though if you know he's going to be shooting the next day...go out late at night and hide a few pounds of tannerite behind his targets...