A sample of 4-bore ballistics

1743-grain conical bullet: 440 grains FFg = 1492 fps

1743-grain conical bullet: 440 grains Fg = 1262 fps

1743-grain conical bullet: 90 grains of Blue Dot = 1319 fps

1400-grain round ball: 120 grains of Blue Dot = 1700 fps