My buddy found these in the old Lyman Manual These are for the 552 Grain #2 alloy. Unique 16 Grains 1050 FPS-20 GRAINS@1200 FPS. NEXT IS 2400 POWDER 23 GRAINS@1100 FPS-29 GRAINS@1330 FPS imr 4227 39GRAINS @1555 FPS-45 GRAINS @1705 FPS imr 4198 48GRAINS@1690 FPS-52 GRAINS 1810 FPS. imr 3031 56 GRAINS@1745- 65 GRAINS @1980 FPS. imr 4064 59 GRAINS @1730- 67 GRAINS @1955 FPS.

Hope these help you out. He recommends the Lyman manual for cast bullet loads. He Emailed me this data. This is not something that I have tried. Might be a good guide line.