Good post Neale. Those RWS 8x68 cases are nice, ay.

Since you've probably got lots of brass I was hesitant to mention this, but standard 2.650" or longer magnum brass is useable. Merley turn the belts down to .522" or .523", trim to length and fireform. They form perfectly and function as normal at any pressure level and work properly in 8x68S dies.