Quote Originally Posted by efm77 View Post
No it's not needed but why chance it? Go and No Go guages are not very expensive. For what is basically a controlled explosion going off just a few inches from my face I'll spend a few extra dollars for the peace of mind. It's your gun, your money, and your life, do what you wish. But as for me, I have checked and will continue to check my re-barrell jobs with both before using them.
Concern is noted. I'm one of those guys that buys them for used guns- especially for milsurps ( how someone can pick up an unknown, untested rifle that's 80 years old, chuck a round in and shoot it is beyond me)...

But it just seemed that there is really no way for there to be an issue. If it's screwed down snug on the go gauge, it can't end up with increased headspace unless something moves during the barrel nut tightening process. Witness marks should make that apparent if that were to happen. But, this is my first re-barrel- which is why I asked.