I use my 28 ga and like cyl/mod or IC/Mod sometimes late in the year go to IC/IM I reload my own #5 3/4 ounce shot since all you can buy is #6 or smaller. The 1 ounce won't pattern as well as the 3/4 ounce shot. The 28 ga has a very small shot string so when you hit with it it really hammers the bird. Hits every bit as hard as the 20 ga and seems when I shoot a bird with it they are dead. Too bad I got this new Benelli M1 20 ga I can hardly put it down now and all my other guns are getting neglected....