If you include sheep, there is no ideal multipurpose rifle for all of the above.
The .375 H&H is ideal but far to heavy to pack to a mountaintop. The little .270 wcf is its little brother , imo .The two are a fantastic combo. The little brother is easy to load for, easy to carry and hits harder than it shows on paper.
I have hunted interior Grizzly with it, and the 30/06- sweet rounds, especially these days. My little old opinion. It is a two rifle answer
The .375 H&H is ideal but far to heavy to pack to a mountaintop. The little .270 wcf is its little brother , imo .The two are a fantastic combo. The little brother is easy to load for, easy to carry and hits harder than it shows on paper.
I have hunted interior Grizzly with it, and the 30/06- sweet rounds, especially these days. My little old opinion. It is a two rifle answer