I have a barrel in the shop that will become a 6x47 barrel as soon as I can get to it. I had a 6x47 40 years ago that shot extremely well, with 748 and a benchrest bullet of the day. It's so close to the 6x45 that load data can be used as references when going from one to the other.
I'd be interested in seeing what works today for those loading for the 6x45.

Thank you,

Retired US Army
NRA Benefactor Member
NSSA Life Member