Ok I read thru several older threads on how bullets increase in size over time, I just acquired a Lee 457-340 F for my 45/70 and cast a few the other day. Surprising they are dropping just slightly less than .460, I run them thru my sizing die @ .459 and they are getting sized to that diameter. My question is, if they increase in size over time could I size them now and say after a month or so they would increase to the proper diameter ?