Here's a interesting and very expensive option, it's a last resort and whether it will stop a full charging grizzly is questionable, but as a last resort it may be an option if you don't have a shotgun with slugs. A .50 cal snub nose revolver.

http://www.smith-wesson.com/webapp/wcs/s...tegory_rn=15707

Model 500ES - Emergency Survival Tool Kit contains:

* Smith & Wesson Model 500, 2 3/4" Barrel with Bright Orange Hogue® recoil reducing grip
* Waterproof Storm® Case
* Blast Match™ Firestarter and WetFire tender
* Saber Cut™ Saw with fabric sheath
* Jet Scream™ whistle
* Star Flash™ signal mirror
* Polaris® compass
* Two MPI Mylar Space® Emergency Blankets
* Smith & Wesson Extreme Ops Liner Lock Folding Knife with Black Sheath
* "Bear Attacks of the Century - True Stories of Courage and Survival" book by Larry Mueller and Marguerite Reiss




Model: 500
Caliber: .500
Capacity: 5 Rounds
Barrel Length: 2 3/4"
Front Sight: Red Ramp
Rear Sight: Adjustable
Grip: Rubber
Frame: Extra Large
Finish: Satin Stainless
Overall Length: 9"
Material: Stainless Steel
Weight Empty: 54.8 oz.
_________________________
Failure is not an option!
USMC Jungle Environmental Survival Training PI 1985