Trapdoors are "battle sighted". They shoot to point of aim at 165 yards. The theory I was told, is that they troops were told to aim for belt buckles. Given the trajectory of these guns, that helped ensure a hit at unknown ranges. Carbines are easiy corrected with a taller front sight blade.
Long gone now, but SR4759 was my favorite powder for these guns. I have just part of a can left.
My only complaint is that they are not real good deer killers. They punch a hole through the deer but the bullets don't expand so the deer tend to run off a bit before expiring. There is a 330 grian HP mold made but I couldn't get good groups with it.

Last edited by WStrayer; 03/25/24.