Hello Craig

Just about everything you read on the 'net (only half of which you should believe - at best) says not to try and use the MS action other than for what it was orgininally designed for - in other words modification will end in tears.

The 6.5x54 MS (which is different from the 6.5x54 Mauser) is a very common cartridge (including dies and components), you can even by it off the shelf down here in NZ !!