OK, went out on a limbo with that "common sense" title but bear with me a moment.
In a revolver boolit mold there's a fairly common range of weights that suit most needs. And, that range of weights is served by the lead that extends into the case plus whatever design the front end is given.
Now, on that front end there is a given diameter of flat spot (meplat) that will generally work best for any given caliber of revolver.
So, why not have adjustable length plugs for an up front cylindrical part (of meplat diameter) that does not touch the case, cylinder and barrel? The resulting mold would provide:
- WC's
HBWC's
HPWC's
SWC's
HPWC's
OK, that was my idea after the 2nd cup. I can't be the first person to ponder this. Never been that good with only two cups.