I have read the glowing results about round balls in fully rifled shotguns and I think I would like to try them. I have looked around but Lyman and MP says they don't have any and don't anticipate making any very soon, evidently. My Hastings barrel slugs .728 and the general opinion is to use the largest ball I can find, which seems to be a .735. I will roll crimp and have a good bit of Unique powder. Does anybody know of a maker that has or will make a .735 mold. Is there a down side to a .732 mold? I have seen Petander's results and they have lit me up!