You missed the point, we forgive you. Let me help. The officers had .40S&W and used a Glock 22; they didn't use the 10mm Auto or Glock 20. The Glock 20 or 10mm Auto has more potential because it's a more powerful model/caliber; The Glock 20 in 10mm Auto can push 180 grain bullets at a velocity range between 1180-1250 fps which produces 556-624 ft-lbs of energy at the muzzle when using full power ammo. The .40S&W is a weaker model/caliber by pushing 180grain bullets between 917-1025 fps being optimistic and producing 336-420 ft-lbs at the muzzle being optimisitic. You somehow twilight zone connected the .40S&W with the 10mm Auto. So your Point is terrible. The point I made was granted a little intrinsic but if you use full power .40S&W and it works, then full power 10mm Auto will work better for the slowing of mr. bear. Besides, you are more likely to get mauled by TSA than a bear. Course, that might be worse, I don't know.