What and where are you planning to hunt? I live in Alaska and have carried everything from a .270 Win/WSM to .300 WM. My go to rifle for bear is my .300 WM, but I just got a .338 WM as a retirement gift from the military. The wife bought it for me, as I wanted a little more oomph for grizzlies. Moose and caribou hunting, I have carried my .270 WSM and .300 WM the most. My son either carries my .308 Win, or .270 Win. Moose are not hard to kill. You would be fine with a .308 or .30-06.