the 9.5 x57 mm can be made from 8x57 or from 30-06...
for using 8x57, neck up to .40-.41 caliber then carefully neck the shoulder down in stages until the bolt JUST BARELY CLOSES with some effort required, then load an 80%+ load and fireform.
for using 30-06, trim to a bit long, neck down in small increments as above, then trim to max length, load and fireform. then resize and trim to Min length.