I have a few Lyman molds some old and some newer. some time after they changed to the orange plastic box the quality seemed to go down and there were problems with molds dropping undersized bullets. all of the older ideal and cardboard boxed molds seem to drop bullets that are right on the right size or even a bit oversize. like my old 358156 ideal mold that I lube size at .360, its great. I use the same clip on wheel weight alloy with a bit of tin added for everything in center fire cartridges.
is it safe to assume that this is how it is and the older molds had better quality control