>>2849652i think i posted something about it in another thread
brit (and other colonizers) came up with tte consept of a stopping rifle. a rifle designed just to stop a charging beast of any size. usually two barrel, kinda short and in an insane calibre like 600 nitro express. in a scenario like op's video you dont have time to reload any kind of action, you cant always trust an auto or semi auto, but you can trust two rounds of 600 to the face of anything on four legs. for bears a shotgun with slugs or buckshot will work just as well, and you need to carry it in your arms ready to fire at any time when in bear country. its up to you and the conditions if maybe a pump or semi with more rounds is preferable or the speed of firing two rounds instantly is. the blokes exploring africa and asia went for two quick rounds rather than 5+ slow rounds.
its a bit confusing to me that the gun knowledge from 3rd world explorers went kinda lost in america and even europe.
i think only svalbard has a culture of guns for bear protection and they dont come at you suddenly you got plenty of time to see them and react so they use regular rifles or big calibre revolvers.