Re: 6.5/300 Wby-Wright-Hoyer Dies needed
I would check with the guys in the PA 1000 yard club, starting with Mark King. He has a lot of odd ball stuff and might know. Other than that, custom dies from Neil Jones and will not be cheap.
Google their website and contact them.
Might actually be cheaper to to a rechamber to standard 6.5-300 wthby and they have dies readily available for that one.