You can size the base with regular 35 Whelen dies and the neck with regular 8X58 dies. BTDT.
Once you have fired brass you can just use the 8X57 dies and neck size, being very careful not to set the shoulder back.
If you do need to FL size, just give the brass a pass through the 35 Whelen dies to size the base and give the shoulder a nudge.
Ted