Drop Free Lapping -- non-size changing is done using comet powder. I still clean off the gas check shank on the lap bullet with a file (taking it way undersized) so it doesn't change anything in the mold around the gas check shank area.
Goal here is to get the bullets to drop free and to see if there are any restricted areas or if perhaps the cavities are different sizes. This form of lapping is very mild and will not change any sizes appreciably (not unless you do it like forever).
Being the world famed Wobbly Goblin Mold those two cavities are currently two different sizes -- I have PM'd Ric to ask him what size he wants both the cavities to be as our next step is doing the size change lapping.