I would call the local police department for Benton county. But I had a similar thing a few years ago with a neighbor shooting guns on his own property. It's within the law to do so, in Marion County, but made a lot of us very angry and it did not go on for long after the fury we all put on him. Law or not, think what your neighor would like and would you like it if it was done to you. Loud noisy in another wise peace ful place! Neighhors are like family, you got live with them, as your neighbor, so best not to make them angry. Folks in the country have a way of making their point totally clear!
Best to you!