Hunting those things and stopping a charge are completely different things. I have no issue hunting moose with a 270 or my 308, in fact when
The season starts next month, I'll be on the alagnak with my 308.

If one was charging me, I'd want a 12g.

Years ago we had s chance to fly fish in Alaska. These prints were everywhere that morning, my wife was scared to piss in the brush . Our guide had a 12g slung ready.