Shame on me I guess. After reading the thread about hand priming tools, I thought I would try the lee. I previously had gone through two rcbs tools but got tired of the pot metal handles breaking! Anyway, I never dreamed that my existing shell holders from both RCBS and Lyman would not work with the Lee. The further shock was that my primers from the 90s that were in their boxes on their sides would also not work unless you wanted to one by one put them into the lee rack! As stated, caveat emptor! Tom