The G-33/40 is a small ring Mauser action originally intended for the 7 X 57 class of cartridges. It may have been rebarrelled to .25-06, but IMHO this is not a truly "safe" conversion as the .25-06 has higher operating pressures than the 7 X 57.
Have a gunsmith make a chamber casting with Cerrosafe to get the answer.
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"Robo is right" Fuzzball
Last edited by robocop10mm; 05-18-2010 at 04:52 PM.