Thanks so far for the input; I'm jut trying to get a sense of what sort of loads would have been sold and loaded in the late 1800s and what the gun would originally have been built for the Greener rule of 96 suggests only ounce and eighth for a 7 lb gun; I've seen 4ish+ drams and anywhere between ounce and eighth and ounce and half as era- and gun-appropriate loads... my loads did leave quite a bit of space to be filled with wads or more powder and shot...