Can only give you what I know,did it once with my grandpa and uncle 15 years ago or so,Grandpa did all the research on it and we went to Zortman Montana and hunted on the indian reservation for them.It was a kick in the pants,shot them with .22,.223,220 swift,.243,7MM,gives you a real apreciation for the power of a rifle and just how far one will shoot.We gave em the buisness out to 800 yards or more,we also whacked em in close at 50 yards,depending on how much they have been shot at dictates how far you will shoot.It was fun I will do it again some day,We went in mid may.
Went Birdhunting to great falls/fort benton/loma area and found a few dog towns while bird hunting,not near the numbers as farther east but there were some.I'll have to ask my buddy who lives near billings what the opportunities are around there and report back,that is still a pretty good poke in the rig to get there though.