I have a retired fire chief that lives a few houses down from here who is the same way. I live out in the county where shooting on property is legal so long as its being done in a safe manner. I have a huge 10 foot high mound of sand, probably about 15x15 in length/width as well. The backstop behind it is roughly 50 acres of woods. Needless to say, I shoot on my property all the time. He's called an LEO out several times and every time they come, they tell me to go about my business. He even made the accusation one day that my bullets were going on his property. Thankfully, he had no proof. He somehow had caught wind that I have a .40 S&W from another nearby neighbor, so when the LEO showed, the first thing he asked was "Are you shooting .40 caliber?" I wasn't that day, I had been shooting my PT-145.
It still pisses me off that I have to explain myself sometimes because this guy has nothing better to do. There are no houses immediately near me, none behind my backstop or off to the sides for that matter, and no roads back that way either. And besides that, I've NEVER had a bullet make it past my sand mound that we shoot into.