Rechambering a 6BR

[Caduceus]

Hypothetical question:

I am getting a spare barrel chambered up in 6BR. If by the time I get around to using it, I decide I wanted to try a 6x47 Lapua instead, aside from slapping myself in the head for paying to chamber it twice, will that reamer fully clean up the original chamber without the need for a barrel setback?

I think I know the answer but I'm just curious......

 

[chris]

From the chamber diagrams here on 6mmBR, they are really close and it would depend on the specs of each reamer....to be safe, set the barrel back a full turn,0.0625" for 16 TPI) to clean it up.