DD, I wonder if that CDL fluted bbl is a sporter, or mag sporter to begin with, any idea?
It is a Model 7 "magnum sporter" which in reality is a Model 700 "sporter" contour. I.e. it finishes out at .660 at the muzzle.
If I were getting a full custom barrel contour for a lightweight rig, I would go .600 at the muzzle between 20 or 22", and get a replica of the Winchester Featherweight shank.
If it was on a 338/06, I'd go with the FWT shank but increase the muzzle diameter to .650+
