Go Big or go Home???? Man oh man, We shot 51 ducks in four days.. With 2 3/4'' 4 shot Kent Faststeel.. We only lost two ducks.... Mostly due to the fact the dog was 10 years old. Personally, I think that a 3 1/2" any shell is way to much for ducks.. I only use a 3'' shell for killing kripples and Geese.