I'll be trying Marty's stuff in a year or so. Was hoping another cottonpicker would try 'em first. He'll do any diameter and mixed diameters. We made contact during the holiday season, he was away from home, but he never got back to me after.
There's one guy on youtube casting with Marty's moulds, but also some earlier editions and he's making buckshot for scattergunning I do believe. My hope is that they make good enough balls for rifle shooting.