RE: Is .308 enough for elk and large bear?
There isn't much difference between the .308, the 30-06, 300 WM, and 7mm. None of those bigger cartridges will do anything the .308 won't except fly a little flatter downrange. If you're not comfortable with a .308 then go with a bigbore like a .338, .375, 45-70, or a .458 WM.