I tried some high performance roundball loads today. Using the .440 Hornady lead roundball, and seating it in a MMP.50 caliber sabot made for .429/.430 bullets (as described a couple of weeks back by LaneNebraska); I tried loading this ahead of 110 grains of fffg T7, 120 grains of ffg T7, and 130 gr. of Pyrodex pellets.

Not too impressive. At 60 yards, using a 12X Leupold, all loads shot around 2" to 2.5". I guess roundballs were never meant to be pushed at 2,000 fps!