RO, I think that makes alot of sense. No I haven't hunted big bears or even seen one shot; but I've spent sometime in my little tent,awake, with a death grip on the 30'06 pondering how I'll react if one of those 1000lb alaskan browns, feeding 20' away, in the middle of the night, comes looking for me.
It's amazing I slept at all.
I'm sure either .338 or 9.3x62 would work, it's me working, I'd be concerned about.