I use only Kent Fasteel for ducks. I shoot the 12ga 3 1/2, 1 9/16oz #3s for all of my duckhunting. The factory SBEII modified choke can kill em as far as anything else out there with this load. I've been waterfowl hunting for 43 years now and had guys shoot every other type of ammo while hunting with me. At the end of the day they always ask, "What I'm shooting and where can they get some"?