Montana is good enough for bucks of that class, but it is not truly OTC for NR hunters. A lough there is a draw, I dont think that all of the deer tags are taken in the initial draw and some may be available OTC for awhile, but i think that the deer-only tags eventually sell out. Montana has long season including much of November. The quality of bucks, on public land, may be limited by these liberal seasons but a 20 inch 4x4 is possible.