This next group is where I think the minimum line is drawn. The 41 magnum and the 10mm seem to have the power to really make an impression
on a bear. I have seen both these cartridges knock bears down and break leg bones. Something the others just dont seem to be able to manage
consistently. These guns shoot over 1000 fps with bullets well into the 200-grain weight category. They seem to have nearly equal power and
accuracy as well. This is where I would suggest a minimum bear hunting handgun for close range start. They are certainly less than 50 yard guns but a great tool for bait and hound hunting. I would not suggest this cartridge as a backup or self defense against bears, only for hunting.
This is a pretty old article. I think I read it a few years ago. JJ regualrly contributed to Huntamerica, AR and 24 hr.
Interestingly, the hot loaded 45ACPs have a velocity over 1000fps wiht a 200gr bullet. The 45ACP loads he saw used probably were not as powerful, and the 10mm were undoubtably loaded rigth up. To compare cartrides fairly, you have to use the loads wiht max potential for both, not cherry pick loads to substantiate your claims.
The double tap data posted by 350 Mag shows the 200 gr bullets of both 45ACP and 10mm as pretty close in vleocity.
And JJ doens't suggest usig the 10mm as a back up for bear defense, either.
Interestingly, Phil Shoemaker, Alaskan Brown Bear outfitter of many years, a man who HAS stopped grizzlies wiht handguns- Used a 357 revolver for quite some time. He eventully gave it to his daughter, (also bear guide)and bougth a 44 Magnum lightweigh.
His reasoning was that in a charge situation wiht a handgun, the only thing that matters is fast, multiple hits, wiht enough penetration to get inside the skull, throat, spine or vitals. Hand cannons like the 454 and bigger were dismissed, as recoil wouldn't allow fast, multiple hits.
He says the most important thing about a handgun is HAVING one, so you can keep your confidence up when a bear is in the area, and hold your ground.
However, he (of course) believes that a handgun is no substitute for a riifle.
Which comes back to my point, and I think Ricks point, too. 10mm or 45ACP or 357....Doens't matter as much as who is behind the trigger- because they all fall short in dealing wiht bears.