I worked up to 7 drams of 2F in my double 12. It was a bit light at 7.5 to 8 pounds and almost spun me around each shot, but was quite accurate to 100 yards with .685" round balls at 466gr. in wheelweights. Hitting a 12" steel plate offhand, 2 rights, 2 lefts was not much of a trick. The same ballitics can be achieved easily, with low recoil and superb accuracy, without the excessive barrel heating that happens with black powder. This is for modern guns only, of course.