Is it just me or has anyone else noticed lately that the combination of Lee dies and Berry's bullets seem to be a recipe for bullet setback? There are several active threads right now where people are seeing this, it's been mentioned here more and more as of late, and in just the last year I've personally encountered the problem as well. It became enough of a problem for me in 45 ACP that I switched to a U sizing die so that I could continue to use Berry's at the indoor range.
So my question is why does it seem this combination is becoming a more common source of problems? Is it the Lee expander die design, are Berry's bullets a little undersized, or is it just coincidence? Maybe I'm wrong entirely, but it just seems like this is becoming somewhat common.
