hello buckstix

just one note- when you size down the big 16 ga bullet the pic here shows the lead is flowing into the grease groove

dip the bullet into melted bee wax or paraffin before and size than. this will hold the groove intact when sizing down because the wax/paraffin is allways there and the lead flow into another direction usually extending the bullet.

I had this problem with the .575 Minie bullets I use for my Husqvarna 17a with a 28/40 cartridge. swage the minie bullet in the die with a hammer to .600 diameter. when you fill the grooves before they will hold the shape. if not they are filled with lead after the work.