I do also have and carry/use 425gr FMJs for the AR-50, and 175gr FMJs for the .357mag. A charging grizzly’s head is like a small boulder and just as hard. If he’s standing, he’s easy to drop.
I was in Cody, WY in 2009, 3 days after a guy was attacked by a Griz sow, which he finally dropped with a 41 cal revolver.
The gun shops up there recommended 200gr. hardcast for my S&W 686 (7 shot .357)
It breaks bones and I can carry while fishing.