The bear situation was presumed to be well inside 50yd probably inside 50 ft .
A 1-1/4oz of shot is going to make a mess . 400+ pellets even spread across 24" isn't going to leave a lot of really big gaps . 24 60 gr balls at 12-1300 fps aren't really going to be a love tap either . A .690 RB is real close to 600 gr and again at 12-1300 fps and a 3/4" hole ..... It's not 45-70-500 at 1400 fps out of an 1895G or 86' Win but it ain't exactly something Catfish hunter would have stopped in his prime over home plate ...... (That was the catcher with the 200+ batting average wasn't it ?)
The biggest stick you can wield that you'll carry 100% is always the right answer .
The 22 LR and an assortment of 25 , 30 ,and 32 cal Winchesters have racked up a pile of grizz and polar bears but I think we would all agree that the charge and confuse hope I'm fast enough it doesn't fall on me brain shot via the larynx isn't the safest way to deal with them . The game is all about disconnecting or disabling the brain from the parts that slap , rip , tear , and gnaw as quickly as possible . A 300# black is not the same animal as a 600# brown or an 800# grizz or polar . Saying they are is like saying a Cape Buffalo is the same as an American bison they might cousins but there's a reason for the 375 H&H and 458 WM with 400 & 500 gr FP bronze solids . Sure Bell killed a bunch of elephants with a 7×57 , but , it was a lifetime job , and his first one wasn't with one and surplus 175 gr FMJ either .