These are the sabot looking slugs, I am using the "Sabot Slug bullet mold .410 GA (10.4 mm) Lyman style, reloading, AS-company" off E-bay and they look good. They seem to run about 123 grain, I am not sure they will fit in a wad, they seem to be a little big, I'll have to measure one tomorrow. Anyone have any experience with these slugs?