i picked up a very smooth feeding and cycling 1903 pattern Turkish Mauser and am looking into building a custom off of it, probably 7x57 or 6.5x54 M/S. however i my research has since indicated it's just a case of threading in another '98 Mauser barrel, far from it in fact. apparently some if not most are a large ring with small ring threads. now, does that mean the barrel shank is the same diamter and there is some sort of adapter, or is it a large ring diameter with a small ring thread pattern, i've gotten a lot of confusing and contradictive info from the net. if it helps the receiver is stamped "Ankara 1937" and i can find no marks to indicate it was made under contract by FN, BRNO, DWM etc, etc. i can get pictures if needed in a day or two any help is much appreciated.


















































