Quote:

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I remember reading once on the MS Collectors website that there were maybe a batch made in 9.3x57. It was one of those legends shrouded in mystery. Never seen one personally.

Matt.

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The Stoeger catalog of 1939 offered a 9.3X62 among models designated by them as 'High Velocity' but not 9.3X57:





Here are custom options as offered through Stoeger ca. 1939. No 'different chamberings' listed, but the MS collecting community is aware of 'off list' custom options being supplied by Steyr both prior to WW2 and after production resumed in 1950 (the 'NO' models and others).