Barnes lists a 7.7 X 60, if that is it. It's an old cartridge and appears to be based on the Mauser "A" base case. BP cartridge and obsolete for decades....and maybe even a century, which makes it my kind of cartridge! It is evident you don't have the rifle in hand but a chamber cast would tell you and if it is on the "A" base, 43 Mauser brass is available and it could be made.

Last edited by sharps4590; 01/29/14 08:51 AM.

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