Just for a little perspective:
If there was any doubt that a 9 mm pistol could protect you against a grizzly bear, a long-time fishing and hunting guide has a shocking story to tell.
www.liveoutdoors.com
I heard about this incident, and then I read the article. I am not disagreeing with what the author of the article wrote, "that a 9mm can kill a grizzly", however I do believe there are better choices in cartridges. I read an article in a magazine, American Frontiersman" where a woman who was out trapping killed a grizzly bear with a .22 short. Even the author of this article stated that he usually carries a .44 magnum if there's a potential of running into an aggressive grizzly.
I believe this article is "very" misleading, and oftentimes is used to rationalize carrying a smaller cartridge to be used as handgun cartridge to defend oneself if there are not any other handguns or weapons at hand and available. I am not an expert, have never had any incidents with any attacks, and hope not to ever have an first experience with a bear attack. I do however carry a Glock 20, 10mm with 200 grain Lehigh, hard cast bullets. On my first ever bear hunt, I shot a small black bear (150lbs) just about the end of legal shooting and nearly dark. I only hunt ground blinds due to limited mobility, so....ground blinds it is!!! I texted the guide, he told me to sit tight and he would be in with some help to carry the bear out once he'd gotten all of the other hunters out of the woods and back to camp. So....I'm sitting there (like for two hours that seemed like ten), in the dark with only one of those "clip on" the brim of your hat lights. Remember my first time out ever black bear hunting, so the clip on light is "what" I had; it's a 600 lumen Streamlight headlamp today. Today I don't even use that light it is in the equipment tote. Might use it to get me to and from the outhouse, maybe!!! Anyways I am sitting in the very dark woods, with a Remington 30-06, cannot see very far and the thought came to me that "if" I needed to protect myself with in a
close up and intimate confrontation with a wounded bear that long rifle just might not be the answer. Presently I carry the G20, in a Craft, cross-draw holster that is accessible with either had if necessary. I have read cases where a .45ACP has killed a grizzly, however I believe the .460 Rowland, the 10mm (16 round capacity isn't nothing to overlook either), or larger cartridges might be better. Plus 10mm ammunition is quite easy to find and even purchase online. After reading some of the replies here, I also consider the weight of the handgun as an important factor as well as being proficient with that particular handgun. Yup the super heavy handgun cartridges are great, however carrying one is a different story and being proficient cartridge is still another issue in itself. For me the recipe is to have a handgun capable of getting the job done, and
one that I am going comfortably going to carry and not leave in a backpack because it weighs too much.