Raimey,
I pulled the Sauer BF out and it didn't have any indication of having been sent back to the proof house. BTW. this is the same BF I spoke about that is chambered for 9.3x72R S&S that I used for years with 9.3x74R, shooting at least five of my Red Deer with it before figuring out it is really the S&S cartridge.
Mike