Jackson Hole WY has a hunt for wild buffalo. The North Fork between Yellowstone and Cody will sometimes have a hunt also. Gardiner MT has had an off and on hunt some years, depending on the antis. These are buffalo that survived in Yellowstone.
I drew a cow bison permit right after the the 9/11 attack for the Jackson Hole hunt. At that time the G&F said on the average it took 11 days to get a cow! Bulls were like 3 days. In 3 days of hunting I had plenty of opportunity's if I would have been hunting a bull. But it took 3 days to even see a cow.
All my hunting was on National Forest