RE: 7mm Rem Mag vs. 7mm-08
I believe that the 7mm08 Remington is one of the best, if not THE best all around gun on the market. It shoots flat and it has some good knock down power. I use this gun primarily for deer hunting, but I would not hesitate to use it on a bear. I've also used this gun coyote and groundhog hunting.
My dad uses the 7mmMag Remington and it has a heavier bullet but has tremendous knockdown power. I have never seen anything like the entrance and exit holes it puts in a deer, they are tremendous.
So, either way I believe that you cannot go wrong with either choice, in my biased opinion though, I like the 7mm08 a little better.