I cast some boolits today for my .475 Linebaugh. They sized and measured at .4762. I measured some that I cast 2 months ago, but sized some time later, .4768. I then sized some today that I cast in the same batch 2 months ago, .4768. These were from WDWW. Sure, the 2 month old boolit sized harder, but I gained .0006 (mic measured). They drop from the mold .4785. I know .0006 isn't very much, and isn't much of a gain for an undersized mold, but it's something. Next I'll try the same thing with 60/40 WW/lead just for grins and giggles, but I'm not expecting as much spring-back.