I would check with the MT Dept of Fish, Wildlife and Parks regarding block management program opportunities in that area. Go to the FW&P website for futher info.

I would also check into the Custer National Forest (U.S. Forest Service)which has extensivepubliclands in that area. Do a search online. Check the U.S. Bureau of Land Management and the Montana Department of State Lands as well.

Best luck to you.