For years I shot a 20 gauge choked skeet and skeet, usually with 1-1/8 oz. of #6 or #7-1/2. For the last two years I've used a 28 gauge, choked skeet and IC usually, with 1 oz. Winchester #6 factory loads.
Funny thing, the first pheasant I took with the 28, I had inadvertently loaded a 3/4 oz. #8 round. Worked fine.
A 20 gauge is plenty.
