I never really paid much attention to this sort of thing until recently...when I read an article in Handloader that reccomedned sizing bullets to match revolver cylinder throats. Makes sense to me.
I pin gauged my S&W 624 (44 special) and all six throats will take a .432 pin but not a .433.
Is there rule for what bullet sizing die should be used? A .432? I suppose I should want a mold that throws at least a .432, too.
There is a very slight barrel constriction at the threads. Is there a way to lap this out without further enlarging the throats via fire lapping (which I've done to other firearms besides revolvers)?