I have been casting .257 bullets in 73 gr from my Lyman 257420 mold. I am using soft roofing lead. The bullets cast beautifully and come out very shiny. I then lube with Lee Liquid Alox and size through my Lee sizing die. I then soak in mineral spirits to remove the Alox before shooting because I am using these in an air rifle and air guns do not like wax of any kind. After the mineral spirit bath and then wash in hot soapy detergent the bullets look gray and ugly. Sure wish I could maintain the silvery luster from mold to shooting bench. Any thoughts on how I may change things to keep the shine?