I don't always shoot steel shot, but when I do it's 1.25oz #3s @ 1400+fps. Usually high end Winchester or Remingtons.
I'm hadloading 1 1/8oz. of HW13 #6. Have yet to need two shots for any duck hit inside 55 yards. Love it!
Thought for the day: Ducks were almost hunted to extinction long before camo was invented.