HawkI, I'll drop a line to Quality Cartridge and see which reamer they are working towards, with their two versions of this 400 Whelen head stamped brass. I'm not saddled with any "Legacy", so I can work off of a blank sheet of paper, if its necessary.

Thank you for the heads up on these necks being thick enough to head space a 400 Whelen on, with their case mouths, like that old Doc, told me to. I already cast bullets for my 45-70 Guide Gun, my 44 Marsh, and I have left an 'inform me' message to purchase a .416 bullet mold for my 10.6mm Ruger based wildcat, with its half inch long neck, ala the old 416 Rigby. So if I do a new 375 or a 40 caliber, I don't really need to roll crimp any more cast lead bullets. I think I have covered those bases, already.