I have not yet done a re-barrel, but will be doing so soon on a Savage.
I had always read "go-gauge" only for re-barreling, and that's all that is required for Savage- screw down the barrel until it bumps the gauge, tighten the nut.
http://www.brownells.com/.aspx/lid=1...r-Savage-Rifle
Why is any other barrel different?