Nothing says "get the F off my property" like the sound of jacking a round into an Remington 820- very unmistakeable sound.I'm afraid that would be my response. I might be caught off guard the first time but I wouldn't let it continue. I would have talked to the police after the second time to get it on record and find out my rights. Nothing worse than a bad neighbor. I had some bad ones when I lived in an apartment but usually loser renters don't last long. Hopefully that's the case with yours.