I put a lot of study into the moulds that I have on hand. The trial is casting to just touch the lands as not to just fall down the bore . Basically I have a deer slayer but w a longer ogive and no shoulder. My mould is 2 pieces and aside from the end bevels is very much a likness of a LEE mould if it fails its no big deal if it works then yea me. I a design that is not in the market or is too costly to me and may not work out. My day off time is free.