Land Use and Zoning: Private Shooting Range in a Residential Area

I live in Illinois, along a county road populated with homes (it's about two and a half miles from the city limits). A neighbor uses his back yard and business to invite friends over for target practice. We hear gunshots for much of the day, and sometimes well after dark. Once, a neighbor actually heard a stray bullet whizz by him, and it struck an outbuilding. Police have been contacted and spoken with, as has the neighbor, but they won't do anything, and tell us they can't. Is there something we can do to stop this?

Land Use and Zoning: Private Shooting Range in a Residential Area