Crimp groove seems a bit large, am guessing that's to facilitate a heavy crimp. I'm thinking we're looking at hard lube and a very hard alloy. 454 Casull?
Picture makes the groove larger looking. It does allow a nice gradual slope into the groove. You're correct the lube is hard Ballisti-Cast. The alloy test 12 BHN. 45 Colt, 290 grains.
