I found a thread somewhere (maybe here?) about using a specific 12 gauge sabot and a 50 cal black powder slug. I thought I book marked it but cant find it now. It was a special wad desighned for smooth bore barrels that allowed the use of a cast 50 cal slug. Anyone have any ideas? And if anyone knows of a Brenneke style slug mold can you point me in that direction. Ive been reading here for hours and I think I am more lost than when I started.