Ron,
Thankyou for the photos and description on your seventh DR build!
This one will be so trim, and should be a delight to use when completed.
That's a neat way of fitting the barrels to the monobloc.
I'm guessing that now that you have a faster easier way to produce a monobloc with the CadCam, that you are probably already thinking of number 8 double rifle project.
Please do post some more photos when you get the chance, as like always, there are many here including myself who will really enjoy following the build.