Factory cartridges were 6.5x57, 7x57 and 8x57 in either long or short barrels, and 7x64 and 8x60S with long barrels. The earliest production models I have owned were from 1942, with German markings. In late 1946 they stopped milling the stripper clip slot (but kept the hump). In 1949 they switched to the square bridge. The last ones were made in 1955.
I once had Griffin & Howe convert an 8x60 full stock to 9.3x62.
