About ten years back I won a 31141 single cavity mould on eBay which had the gas check shank removed to form a plain base design. I had asked the seller if the modification resulted in a mould casting same dimensions on drive bands and base; he assured me it did. Upon arrival I discovered the base to be machined concentric with the bands but as cast the base measured.320” . Well, I decided not to get upset about the seller’s fabrication regarding base diameter, as I thought I might be able to use the boolits by running them thru the lee .311” push thru die. Anyway, could the mould be lapped larger on the ogive/ drive bands to .316” to allow the boolits being used as a pp projectile for a .32 special or an 8 x 57? I have opened sizing dies using boolits embedded with lapping compound, but haven’t tried enlarging a cavity.