I know the Savage barrel nut system allows us to install and headspace our barrels to the action fairly easily but how many of you send in your receivers to have a barrel manufacturer or gunsmith chamber/thread/fit your barrel to the action?

I catch a lot of sh*t on forums other that savageshooters.com for not sending in my action to have a barrel blank threaded/chambered/fitted to my actions. Am I really losing that much accuracy by using a pre-fit barrel like a Criterion which has a standard SAAMI spec chamber and come threaded ready to install?