Can someone help me answer a question?

My neighbors are armed to the teeth. Every freaking holiday they post pics of all the guns they get their teenagers not to mention all the anti-Obama crap you’d see from a typical wingnut on facebook. They also refer to their multi family 20 acre lot with 5 houses on it(mom/dad, their 3 grown daughters with their husbands and kids and a couple other family members)”The Compound”.

What’s unnerving to me right now is that someone over there is target practicing maybe 150 feet from my backyard. There’s nothing like playing with the dog or doing some gardening to the sound of shots being fired. My dog won’t go out if she hears the sound and frankly,I’m not willing to run the risk of going out there while shots are being fired.

I checked the law, there’s nothing that stops them from doing this, but honest to god it’s getting obnoxious. They only started doing this recently,I’ve been here for 15 yrs and they never shot guns out in the yard til now. Should I call the county sheriff and ask if there’s any law or rule,or should I just let it go?