I used one of the Brownells short chambered 6.5x55 barrells and my GS re chambered it with a German made match chambered reamer in 6.5x57 and threaded it onto a 1916 Erfurt SR action for me. I made a blind mag stock from a beautiful blank for it and have a superb rifle now. Load the 139gn privi partisan bullet to 2800fps with excellet accuracy and great terminal performance.