There once was a fella named Jack 'something or the other', I don't remember his name but he wrote really good books on hunting game all over the world... I think he was in love with the 270.....
Anyway, his recommendation was 1800 foot pounds at the point of impact on dangerous game... Or maybe it was 2000....
Whatever..... But those numbers can be used to determine if you have enough gun at any given range for large dangerous game....
Upon visit to Alaska I discussed the “stop a bear” question with park ranger. 12ga w slugs was the recommended medicine. This was for stopping a menacing bear, not shooting one at hunting ranges. For that I’d want NLT a .300 win mag and preferably .338 or .375
He was a big advocate for .270 Win - to the point of silliness sometimes, I think. But he was a good enough shot that he probably could have gotten along on most game with a .22 short.