Um. My sons Rossi single shot is so light it kicks harder than my sks and nearly as hard as my .270 abolt. I put the 20 gauge on the Rossi and put 3 inch turkey shot and it left a bruise. Kicked harder than any 12 I've shot including some single shot 12s. I think reduced .270 would be lighter than that gun.
a single shot 20 is a mule.