I’ve never shot a 7.62x54R before, but a buddy has one and he says the carbine version kicks way more than the long rifle version.
I can see how that could really mess up your wrist. If you could master the accuracy part, that would definitely be a one-stop shot.
I have 2 of the 91/30, long barrelled version. His was an M44 carbine, a stumpy version of the same rifle. That’s the only mosin carbine I ever shot, and I didn’t shoot it until after the chop, so I wouldn’t know. My 91/30s aren’t that bad. Not much more than my no.4 mk1 .303
I have the M44 carbine and it kicks and will ring those ears good. If you have protection you are still going to feel/hear it when it goes off.