IMO, you need to look at other variables. Speed is important but also the energy your shot can impart at various distances is TERRIBLY important. I have completely gone away from STEEL and settled on using Hevishot Duck. The shells are more expensive but I simply use fewer shells to kill roughly the same number of ducks. The Hevishot simply does the job with ONE shell as opposed to 2 or 3 that I used to need using STEEL.