I can get a one shot, one hole group at 4 yards with mine, however, the blast set the target on fire and this is all I have left to prove of it... :haha:
The bess can handle a wide range of loads of black powder...
Loads are for .715 round ball and .020 pillow tick patch lubed with Crisco...
20 grains FFg, 341 fps.
30 grains FFg, 455 fps.
40 grains FFg, 569 fps.
50 grains FFg, 662 fps.
60 grains FFg, 754 fps.
70 grains FFg, 817 fps.
80 grains FFg, 879 fps.
90 grains FFg, 943 fps.
100 grains FFg, 1006 fps.
110 grains FFg, 1047 fps.
120 grains FFg, 1088 fps.
130 grains FFg, 1136 fps.
140 grains FFg, 1184 fps.
150 grains FFg, 1213 fps.
From Stumpkiller's former post:
3 drams/82 grains is a good all-around load for a Bess. It hits hard and increasing that load only makes more noise and burns more powder. You're more limited by the lack of sights than the remaining energy at the target with one o'them big 'ol punkin balls. It will kill anything you are likely to hit out to 75 yards.