I've read two accounts now that it does indeed have bear stopping power, not to mention that the magazine holds more rounds than the .44 magnum revolver. However, the 10 mm is hard for most people to shoot, especially with hard cast bear ammo. So Swimmy would need another pistol to practice with in order to be proficient with the 10 mm. I've only shot my SIL's 10 mm once, and I'd need to practice with it a lot before I felt confident about pointing it at Mr. Bear.
the 44 magnum is way cooler... If i can't get it done with 6 shots more rounds will not help..