i carry a .30-06 as my scouting rifle. i carry winchester 180gr fail safes. a 180gr SP would work as well, but the fail safes have a steel instert that gives it better penetration.
i've yet to use one on an actual bear, and i didn't get drawn for a tag this fall :(, but i've tested them against a few others with some wet phone books and was really happy.
Grown men do not need leaders