I am going on a spring archery bear hunt and I intend to carry a sidearm as a just in case kind of thing. I currently own a Glock 21 in .45acp and I don't intend to purchase a new handgun for this one time use. I understand that there are better calibers for bear protection so please save the advice to go to something bigger. Given that I will be carrying a Glock 21 in .45acp (+ P) what I would like some advice on is whether a hard cast bullet would be better than a bullet like the Barnes TAC-XP, or even a XTP round. I've read a lot from guys who say to go with the heavy hard cast lead for penetration so I've been leaning that way but before I go buy a $45 box of ammo I'd like to hear some others thoughts.