.308. Same bullet and caliber I use for everything from deer to moose bear and elk.
Yet to have an animal stand up to a 175grain bullet
If it’s sufficient for bison it’s sufficient for anything that walks this continent.
A well placed bullet will accomplish many things. A big gun and gut shot accomplishes lost game or dead hunters when its Grizzlies. They dont care about calibre and dont take prisoners. From what Ive read. They scare the shiX out of me but theyre a beatiful animal. I would hunt them with the utmost respect, they deserve.