So i let me get this straight in my head, if i take a 8X57 BRNO and send it to my friends at JES and tell them I want it rebored I can get a 9.3X62 ?
If I understood z1r correctly, the result of what you propose would be a 9.3x57 Mauser. If you wanted a 9.3x62 Mauser, you’d need to rechamber with a 9.3x62 reamer after the rebore to 9.3mm. But I could easily be wrong....