Hello justcurious,

Have seen here many Original Sporting Mauser rifles, with this Intermediate lenght action, in distinct configurations, chambered for "our" 7,65x54 Mauser. Most of them marked "7,65 Turk".
So, it is sure Mauser used these two chamberings un this type of Intermediate action. I don't know if there are others chamberings used with it.
I know three military Mausers first used this action:
1903 Turk 7,65x54
1909 Peruvian 7,65x54
Don't remember the year, the few Paraguayan 7x57.

Best regards

PH