Homer,

It looks like a 1903 Turkish Mauser, made in 7.65 x 53 mm by Mauser in Oberndorf, reworked and remarked by the Turks to 7.9 x 57 mm.

Large ring receiver, small ring barrel tenon, usually very smooth actions. The original actions were similar to the 1909 Peruvian M98, with the intermediate length bolt and the elevated clip charger.