Some years ago John Linebaugh did a series of comparison tests with heavy weight cast bullets. He concluded that "...a dependable cast slug, not too hard, not too soft, at a moderate velocity not to exceed 1300 fps and let caliber and bullet weight do the job..." He went on to state that his preference was 1200 fps. I load between 1100 and 1200 fps, depending on caliber. I prefer 1100 fps in my 45/70 and 480 Ruger revolvers and 1200 fps in everything else.