i have never seen a grizzlly in my life so i am not an expert. however i would much rather have any rifle in my hands when a bear changes then have a pistol straped to my side. by the time you got it out it would be to late.

and i would guess that most bears don't charge running broadsides so chances are you aren't going to break the shoulders down.

however i have lived and been very close to black bears all my life and i know they will almost always "fake attack" you where they will take 3-4 hard fast steps towards you and then stop and grunt. and i am sure 90% of hunters who had a bear do this at close range would shoot thinking they where charging. which only lead to a wounded pissed off bear not a good thing.

i wish you luck in not getting attacked, but if i where you i would carry the 30-06 with barnes 200+ gr. triple shot bullets or X bullets