You already have a gun that will easily take any and all North American game. What you may "play" with is selecting 2 or 3 bullets to match the game you are hunting. For instance; for small game like deer, lopes, even black bear . . . 150 - 165 gr bullet that open quick on thin skinned animals.
Then maybe go to 180 - 200 gr for elk, mooose, brown/grix bear.
As I see it, you already have the gun, what you need is to fine tune the bullet/ammo to use.
Again, make sure you can shoot it confidently without flinching, and here's the most important thing . . . practice, practice, practice! I mean out to 400 + yards. You may never want or have to take that shot, but at least you would have the confidence in taking it ethically and it's fun!!