I shoot 3 or 4 rounds of Skeet every week. I shoot most of it with my Browning Citori O/U, but usually a month or so before bird season every year I bring out my black Tupperware stocked 870 and shoot 1 or 2 rounds of Skeet with it. Both guns are 12 gauge, and I shoot the same shells through both of them.
My 870 kicked more than my Citori, and in less than 1 round (25 shells) I would get a bruised cheek from it.
I finally replaced the factory recoil pad with a 1/4" spacer and a 1" Kick EEZ pad. No more hard kicks or bruised cheek.