If you are incorporated for doing geological consulting then your boss who has to sign off on your ATC application is YOU.
Don't underestimate the penetrating power of a heavy slow bullet like the .45 Colt. Skeeter Skelton reported seeing pass throughs on horses in some of the gun fights that happened around him in his youth.
This was just with a lowly .357 magnum......
https://www.fieldandstream.com/photos/gallery/hunting/2008/01/grizzly-attack-caught-camera/
Ya, at the time I wasn't self employed. Nowadays I have a little placer operation in the Omenica. I probably should put in for it again though as I would like it for prospecting activities...having one's head down in a creek with gun and pack on the bank isn't really the best move lol!
I do understand that a lot of people used the 357 for bear and that it's generally enough. My logic with the 454 was I could load it to anything up to full house loadings as well as most people who've had encounters say they get one shot off. The SRH because double action. That said, I really do like that link you shared. Very telling how things can progress.