Third, because of the poor aerodynamic shape of shotshell pellets ? even very spherical ones ? a little pattern testing quickly reveals that the patterns of high velocity shotshell loads ? regardless of metal type ? are seldom as good as the patterns of lower velocity shotshell loads.
My decades of lethality testing of lead and nontoxic shotshell loads for taking waterfowl and upland game birds have revealed the science-based reality that with lead and nontoxic tungsten-composite pellet hunting loads possessing lead shot equivalent pellet densities, all you need for effective (spelled: lethal) velocity is something near 1250 fps ? 50 fps. For steel loads, all that is needed is something near 1350 fps ? 50 fps. Launch velocities in excess of these benchmarks have not proven to increase lethality, but do help some shooters with their leads and thus hitting success.
So, one has to be quite conservative in selecting a high velocity shotshell load, or there is very little practical benefit. In fact, the benefit can become largely psychological. This is especially true if the shotgunner remains ignorant of the irrefutable laws of the physics of balls, never takes the time to pattern test his or her ammunition, and ignores the erosive effects on one?s shooting success caused by the ever higher recoil levels of higher and higher velocity shotshell loadings.