Many options here but most of the time it boils down to shot placement and your ability to make it under given field conditions. Wounded animals ruin your trip.Get as close to game as possible. 338 Win Mag for me for a one gun do everything and good to have in Griz country. You are not so no worries there. The one gun do everything idea is not a bad one. You REALLY get good with one gun and practice and if you can load your own. I have a few, but concentrate one the one gun plan for big game hunting. Works well for me with no brake