If you're facing half a ton of angry bear why would you handicap yourself with the .44? Sounds like somebody has a secret fantasy of being a bear snack. I would put my money on the .454casull or if you have a REALLY BIG set, try the Magnum Research .45-70BFR. I would chose the .454Casull or .475Linebaugh.They will give a little more control and with cast bullets will provide plenty of penetration.