I would sure like to get one of these also, I have a hungry Tommy Gun. I use these for powder coating. The one I picked up for the 300 Blackout worked like a dream!
Put me down for one of these I reckon the slicks will just fall out of the mold.
Casting with slick-sided molds is awesome–the bullets jump out with minimal tapping. They also fill out easier. If powdercoating, it seems like its the way to go.