Quote: If you get/find brass that fits the chamber of your rifle, you can get by with 6.5x55 or .260 Rem dies which may be less expensive than 6.5x54 dies. Neck sizing is all you will have to do, so any dies that neck size the case and don't touch any other part of the case will work.
The correct case to reform is the 6,5x57 mauser. Casehead and rimdiameter.