I have a question maybe somebody can answer. My father bought a Turkish Mauser 10 years ago. Down by the muzzle, on one side it is stamped 8mm. On the other side, it is stamped 7mm. It is an 8mm mauser, we checked to make sure. Was it just mis-stamped? And is this a common thing? Just curious is all, and thought somebody might have more knowledge on the subject. Thanks