Hmm, that Judge thing looks really interesting. It is like having a really powerful shotgun in the easy to carry and handle size of a handgun. No one can really debate the power and accuracy of .410 shot out coming out of a 5" barrel either. It should make a pattern that will make it impossible to miss if you are anywhere near the bear. You can even go with the bobbed hammer for easy concealed carry.
I wonder how it stacks up against the BFR? I like to buy American whenever possible.
Re the Judge vs BFR, you'd have to buy both and do a scientific test like guys do in all their hobby fields. In this case I'd recommend setting them up on tripods with a robotic finger pulling the triggers and shooting into ballistic gel.
Those guys who run around and shoot moving targets on special ranges, or go hunting, have skipped their fundamentals like this and don't do as well when the SHTF.
Plus they won't have a robot to back them up. I've watched lots of Doomsday Preppers recently so understand you need your partner plus at least one other to fight off the bad guys after the sun ejects pulses onto the earth. If you don't have any small kids, these robots could help you. Plus they don't require kid sized gas masks, so you can spend some more money on other preps.
Just remember to store the robots in a metal trash can so they survive the pulses.