Brutus
CGN Ultra frequent flyer
110% Agreement here!WildRose,
Grouse Man and Claybuster have given you good advice.
I have a 20 gauge M37 Ithaca Featherlight, with a 2 3/4 inch chamber, and I can swap out the barrel easily for others.
With it's 20 inch fully rifled barrel & saboted slug ammunition, it kicks harder than any 12 gauge pump action I own.