Turkish Mauser question

[John Kepler]

Frankly, I doubt the conversion would work even if you did try it! Take a look at your Turk.....notice the little "half-moon" cut in the receiver above the charger bridge? That cut was put there when your Turk was converted from 7.65mm Mauser to 8mm, and the 7.92x57 JUST clears the receiver with that added cut-out! My guess is that a 7.62x63 (.30-06/.25-06) won't!

FWIW, what look like Turkish "Large-Ring" Mausers really aren't. They are a lot closer to the Mauser #3 Commercial action, and have more "Small-Ring" features than "Large Ring", the action-length being the most notable difference.