While I agree that the use of both is a good thing to do I also have chambered dozens of barrels with only the go gage because as a machinist I can easily control the lathe to the go gage within a "thou".

Further, if I'm chambering a gun that is not to be traded I will buy the loading dies first and full length resize a fired case and use that as a go gage because it makes the rifle chamber fit my reloading dies.....this is only for those that don't plan to ever trade the rifle. It's surprising how long brass lasts when this is done.....

Make no mistake about it....the go and no-go gage is the preferred way to go because it insures that the finished product is "per the specs"