Because steel pellets are round and hard, they fly true. Large pellets, like BBBs, flare less from air resistance than smaller pellets. The Classic Heavy High Velocity 3-inch, 1-ounce load of BBBs put 88 percent of the pellets in the 40-yard circle when shot in the Winchester Super X2. With a cloud of large shot like that, there's little sense in shooting 3 1/2-inch shells. According to Federal, this load's foot-pounds per pellet at 40 yards is 11.76, which is more than enough for ducks or geese.