I never faced off against grizz either. From what they tell me, ya gotta have heavy firepower (minimum 30 cal. long gun) fer them and make yer first shot count. If worst comes to worst ya can carry a real heavy caliber handgun too as a last resort if the rifle don't stop him...but that's fer humans. If yer a chimp, you just get them boots off REAL fast and shinny it up the nearest large tree.