I had a long talk with a guy who guides in the area I'm going into and he has ran into bears frequently and just luck of the draw not gotten rolled yet but others in the same area got hit. His advice was just to pack a large revolver and not worry about a gun, he said he's never ran into a bear there and gotten his rifle up in time to do any good if a charge would have been real which was something I never thought of, the situation is most likely shooting a bear after getting rolled, really were will be going in one trails that are fairly dense and during hunting season that's where hunters are pulling game in and out of too. The few mock charges I've seen have been open enough I had no issue pulling a rifle up but he is convinced in this terrain and those bears you won't get a round of till after a bear hits ya. He had some interesting takes and advice to think about. He used to carry a Glock 10 mm, now carries a wheel gun, I tend to agree with that as what I've seen your not going to have time for a mag dump which is what most guys with semi's rely on but I don't think I've ever heard of someone getting more than a round or two of so better to hit them with something big.
I was convinced to just roll a rifle till I talked with this guy, I can totally see where a rifle would be best in some situation, I can also see if you get rolled a rifle will be useless and a pistol on your chest is the only way out. I do hate sleeping in small tents in mummy bags in grizz country, I feel like a bear burrito