P-14's make good 'action' platforms for the 8x68S.

Case Length 2.658"

8x68S RWS brass is super.

If need be, 8x68S brass can be made from .375H&H quite easily.

Turn the .532" belt down to .522" to .524" on a lathe, to fit the 8x68S chamber. I used .522" and it worked perfectly for me in the chamber I cut in the .375" bl. for the 9.5x68 chambering I dreamed up, for a rimless .375 - in the mid. 1980's.

Lube and run the .375H&H case into an 8x68 seater die with the seating stem removed, then the Fl sizing with decapping stem removed. Trim to the length of 2.660".

Replace the decapping stem and re-FL size to open the neck for the 8mm bullet. The necks may or may not need to be reamed or turned. Trim to 2.650". Max case length is 2.658" according to Hornady's Loading Manual.

Note, the 2.85" .375H&H case might have to be shortened 1/10" before sizing it in the 8x68S seater die, but probably not. The seater die's dimensions will be kinder to the brass shoulder movement - normally, when using normal die sets. You may not have to use the seater die first - it is best to experiment first.

When the brass is fireformed, the case will expand ahead of the belt to fit the chamber perfectly. Once fore formed, this brass is then capable of handling any 8x568S loading.

This is how I made my 9.5x68 cases when I could not find RWS brass. It took longer to type this out than to make the brass.

I found the RP or Fed. .375H&H converted brass to be roughly 2gr. greater water capacity than 8x68S RWS brass simply necked up to .375" for my 9.5x68. My ballistics were identical between the 20 or so, RWS cases I had and the .376" brass I converted, using identical loads.