This is really a lower 48 question, but there is a lot of bear knowledge here.
I have a .44mag and the low recoil buffalo bores are 1036ft/lbs at the muzzle.
In states where I cannot carry a pistol I am thinking about a 20 gauge for black bear defense. All the Remington stats show a 20ga slug in the 1500 ft/lb range. The Brenneke stats show a 3" 20ga at 2120 ft/lbs.
Yes bigger is always better but does anyone think a 20ga is foolish in this case?
I am thinking about a Browning BPS Upland if that matters.