Fuhrmann,
I hunt with a more modern version of the bore rifle, mine is a 20 gauge using the Lyman slugs at 1400 FPS. They do O.K. out to one hundred yards or a bit further. That is as far as Iwant to try and shoot at deer with open sights and is probably a bit more than most people should try to shoot, unless they practice a lot with their guns. These slugs, as I make them, weigh just about 375 grains.