Stone, If you get the chance, while ranges tend to be longer out here, with a good flat shooting rifle they are quite do able.. Like jawall, I like fast shooting calibers.. But I also like some bullet wt. at least 150 gr. When I drew my bighorn permit, I practiced shooting all summer to 500 yards.. When the time came, I needed it.. But the 150 gr. bullet dropped less than 2 feet at that distance.. This is easily achieved with quite a few calibers..
On the last trip for elk, our guide told us we would shoot at about 300 yards max.. We both got them at about 200.. For a .270 300 yards is do able with a dead on hold..
