On my mothers' side of the family there is a guy that did just that. He stuck one hand/arm in the mouth and went to cutting, it was a California grizzly and I'm not sure how they compare in size. I saw a picture of him one time and his hand looked a little gnarled up.
For the OP.
I would use hardcast bullets like Shoemaker did if I was sticking with a 9mm.
