Again I have plenty of training and wouldn't just start spraying bullets.
This is in conflict with what you wrote a couple of posts back:
if a bear suddenly out of no where charges I am dumping the mag.
The plain fact is, if a bear is rushing you, aimed shots, and certainly head shots, are out the window. You're better served by knowing how to spot the presence of bears and avoiding those areas.
I've gotten this question a lot more than usual lately, and the fact is, handguns are not a great choice for this. Bears are thick-skinned animals with a high pain tolerance. They are
fast. Furthermore, we're heading into fall, which means they're going to be gearing up for hibernation soon. They can be very aggressive during that period.
Seriously, you do not want a confrontation with a bear. If it decides to rush you, the chances of it ending well are slim at best.
Factory .45 ACP loadings are not going to cut it. They don't have the penetration. The recommendation for 180gr .357 cast loads is much better, but even then, only against smaller black bears for the most part.
Honestly, if I
had to go into an area with medium to large bears for some reason, it'd be a decent rifle or a shotgun with slugs.