Air horns are effective against bears.
Guides in Alaska carry air horns, bear spray, side arm and rifle/shotgun to keep watch of fisherman in the river.
Really depends on the who what where when.
A shed hunter shot and killed a sow grizzly bear last month as the 300-pound bruin charged him in western Montana. Montana Fish, Wildlife, and Parks (FWP) reports that the incident occurred on private land northwest of the town of Wolf Creek. The shed hunter, who has not been identified, was...