I've used mine on geese. I've pass shot them and over decoys. Mine is a Browning Gold. It definitely hits geese harder in both situations from my (but limited) experience than 12s whether 3" or 3.5". Same shot size. Maybe it patterns better, I don't know.
I’m guessing “it hits harder” is more likely due to just more shot on target.
In my limited experience with them, I’ve found 3 1/2” 12’s to be akin to having your teeth cleaned unless in a heavy, gas-operated gun.
