Hi fraserdouble,
in Europe 8x60S is still available as ammo. RWS is selling
the cartridge with 11,7 gramm DK ( double core bullet)
8x60S ( =8x60 Magnum = 8x60 Bombe) means .323 bullets.
If you have a fax no. I will send you the original reloading datas.
regards Johann