What caliber?
Always carry an RPG or a hand grenade when in Grizzly country. If you are that close to use pepper bear spray you is ded alredy.. A black bear raced our car once up`n on the mountaintop when I wuz a kid. My mom wuz drivin. We wuz doin 40 neck n neck. She gunned the motor n said, “Watch this!” She used to go blueberryin as a kid with her sisters armed only with pots n pans to bang on to scare them bears away. We got a bear comes right next to the porch but the cats scare him away. True story.