Has anyone tried using the Lyman 12 bore Sabot slug. I saw someone enlarge the mould for full 12 bore size, by using a lathe and boring bar to make the front band, and rear skirt larger, along with turning the waist into a normal grease groove.
That would be the cheapest paradox mould there is.
Our own Mike Rowe here has made normal paradox moulds, however I do not know if he still does this work.