On your first post you called your place 5 acre range. What did you mean by that? Are you by any chance on the Yellowstone River bottom or have irrigation? That could make a lot of difference on carrying capacity or stocking rate.
My first thought was--no way. Now--maybe, the irrigation changes everything. I irrigate some but I'm several hours south of you in a different climate with different temps and humidity. That means I'm not qualified to advise you. The water available, the soil types, and especially your management will make all the in what you can do. Good luck!