I have a disclaimer regarding the M-S Caliber List: I have no particular expertise in this subject, just an abiding interest. I also have a modest library and access to the WWW, which I utilize constantly. I am, therefore, grateful for any direct or indirect knowledge, or well-considered opinion, concerning M-S calibers. I realize, all too well, that published information may be erroneous; I will be happy to make corrections when necessary.