I find it hard to believe that there are no shooting ranges in Montana.
As commercial shooting ranges tighten restrictions on shooters due to regulatrions imoposed by their insurance carriers, more and more shooters say the hell with it and go elswhere, and that's particularly true of full-auto shooters. But in a very real sense, it's fair to say that any secluded and safe public area in Montana is a shooting range. I couldn't tell you how many friendships I've made in Montana and Wyoming where the first introduction was the loud boom of someone sighting in or trying out a favored rifle, and an interesting conversation followed. Sometimes that happens at ranges, as often, not.
-archy-/-