For overall hunting of griz or browns, I would use the old .375--
As to your story of being charged, living in close proximity to Yellowstone National Park--and as a bow hunter as well, we have also had more than one run in with grizzlies..the most recent of which was last year--my best friend (John) was going around this area on one side and myself on the other--was both carry handguns while John also carries pepper spray--while we each were sneaking along, John heard a woof above him and saw a boar grizzly at about 50 yards feeding on a dead elk..John said he slowly tried to back up while trying to get his hand on his revolver.. the bear charged.. John stated by the time he even got his hand on the holster, unclipped the latch, the bear was 10 feet away snapping his teeth..John froze --the bear slowly walked away,, and once about 25 feet away, he looked at him again, woofed another time and walked back to the dead elk.. give the bear his due, all he was doing was protecting his food---but it could have gone much worse..IT took John quite a bit to even get his wits about him--he said he could hear his heart beating in his ears both before, during and after the encounter..and never had the time to do anything.. it all happened too fast...so one must really proceed cautiously while in these types of situations..
A local photographer was attached late spring this year in my home town.. after 8 surgeries and one less eye, he is still not back to normal--(whatever that means)...
I hunted brown bear in AK a few years back and laughed when I read the article to taking the gun to the outhouse...as that was my experience as well---I was NOT allowed to go outside to the outhouse without taking the camp .375 along--or even if I wanted to do a little fishing close to camp.. had to have the gun on me..no questions.. in this particular camp during the prior years hunt.. a brownie had literally ripped off part of the addition to the cabin, gone inside and helped himself to the canned goods in the kitchen..after done he left a nice "steamy" thank you in the living room..
All in all, however, bears are really, really cool...however they demand a great deal of respect.. give them that and a little common sense..and in most cases you will be alright..
Ripp
-------------------- ALL MEN DIE, BUT FEW MEN TRULY LIVE..