I can flat tell you that if you're not on the level of Jerry miculek, no handgun is going to amount to a hoot vs a charging bear. You'l have to brain him. Give me a Remington 748 autorififle in 308 and lots 0f milsurp practice ammo, and Nosler Partition softpoint ammo in it for the real thing. I"m not risking the bear spray, cause it's too short-ranged. I'll start shooting at the bear's head at 50m, if he's charging, cause he can cover 50 ft per second and I might need all 11 rds to get a brain or spine hit.