Need some more info like WHAT you are hunting. Elk, Moose, Whitetail, Mulies. Believe it or not, it makes a pretty big difference because of target size. Also, how proficient are you with open sight rifles? Montana offers a VAST array of different shot options. Everything from right in your face to 1000 yard shots. If I remember correctly, the Livingston area is pretty much Elk and Whitetail (been a few years since I hunted Big Game in Montana) and they have some outfitters that offer bow hunts so that tells me that you should be able to close some distance. It pretty much boils down to, how good are you with that rifle and are you willing to risk a bad shot (big no no) when you could have been using a better tool that you are more proficient with.