I was sizing some Lyman 358495 .38 wadcutters and noticed that the boolets are compressed and the lube grooves are much narrower than before sizing. They drop from my mold at .360x361" and the sizing die is .358" I've also noticed this occurring with a .45 Colt bullet in a .454 die - narrower lube groove. I'm using range scrap of unknown hardness, Lyman sizing dies in an RCBS Lubrisizer II. I saw a recommendation in another thread to tumble lube the boolets before the sizing/lube step but that seems like a real pain so I haven't tried it. I haven't seen any leading as a result of less lube, but I'd rather have the grooves stay as cast. How have others dealt with this problem?