Actually, when comparing the Hevi-shot waterfowl loads to the turkey loads, the waterfowl usually have a little less ounces(1 5/8 ) of shot and velocity is 1300 fps. The turkey loads have 1 7/8 ounces of shot and are 1250 fps. This is for the 10 ga. shells I shoot. Both will kill either game equally but I like the turkey loads for both because of the pellet count.
You can't go wrong with either one but pattern each if cost isn't a factor.
I love the old Hevi-shot for ducks and turkeys.