I think there are two philosophys with these big bores.

1. Wood grips. Let the gun roll in your hand. I don't seem to be able to make that work for me, maybe with some more practice.

2. Grip the gun firmly. Let your arms rise with the gun, but keep your grip. That seems better for me. However; smooth grips work against that. Hogue rubber finger grips help a lot. With wood grips, gloves help.

Not trying to convert you to either method. Just giving options. But, if the shock of recoil hurts your hand, rubber grips that cover the back are a friend.