I was decking a roof one day and bullets kept wizzing past us as we worked on the roof. The boss said we should shoot back. He asked who had a gun and everyone raised their hand and said, I have a few... we didn't shoot back, but it turns out someone was plinking with a .22 and they shot holes in all the houses in the neighborhood. Luckily almost all of those houses were empty, but still there were holes in the walls and a few windows gone. A safety class might have helped I guess. But it says right on the box of ammo that it can go for a mile... What is your backstop is always an important question.