In the past 12 guage shotguns are always in the mix when bear protection is discussed. What loads are usually used in that role, 00 or slugs?
Yep 320-400 grain slugs, either jacketed or hard cast, in 43-48 caliber and running 1500-1700 fps. 16 - 20 inches of barrel is about right. Shotgun is nice 'cause you can loft shell crackers, and Foster slugs generally scare bears well when you 'splat' them in their vicinity. (I don't carry a 12 gauge but we do keep one at camp.)