No. Dont use it. Buckshot doesnt hit with enough energy and the round balls dont cause enough internal damage. The bear will probably die but it may take awhile and buckshot doesnt give you a very good blood trail. I shot a buck with it back in the day and if it wasnt for the pellet that hit the spine I would have lost that deer. That was my first and only buck that I had to shoot twice. Looking at that deer you would have never known that it was shot. You couldnt see any indication of a hit on it until the skin was off and the damage you could see was minimal. That was 3" mag 000 Federal Premium Buckshot that I used.