I remember some vender had a few Long Lee Enfields (with charger guide) for sale in the Shotgun News about twenty five years ago, they had been captured by the Turks and converted to 7,65 Mauser
according to the ad. I thought about buying one but they were is such poor condition that I passed on them. Never seen them list again.
The Turks also converted some of their Martini Henry rifles to 7,65 mm around 1909, they used some type of stirrup or brace attached to the rear of the action