I'm quit positive that the no-go gauge is OK. I trust it completely, I've used it on various bolt actions, M-i,s and Browning also and it works. Like I said, its mostly on guns people are trying to move, probably because they are having a problem with it. They won't admit to that if they want to sell or trade.
I believe the Rem auto or pump for the most part is a blue collar gun owner who only owns a half a dozen or so guns. They don't get rid of them unless there is a problem. For that matter they don't shoot them much either to create a problem.
I have used the gauges on my friends Rem rifles that are not experiencing any problems and the action won't close on the no-go gauge.
In my original post I said beware of the used Rem rifle. I'm not laying claim to all of them. A lot of Rem owners a satisfied with there rifle and evidently not experiencing any problems. Thats proven by how many are out there in use. I personally don't sell a lot of Rem autos or pumps. I have sold some, but the headspace is correct. The people who bought them from me must be happy or they would be calling me. I stand behind the guns I sell, if there is an immediate problem, let me know. I don't operate on a "Buyer Beware Basis."
My take on them is this. They either left the factory with excessive head space. Or they are soft, because like I said the owners as a rule don't shoot them often enough to WEAR them out. That should not happen until we pass 20,000 rounds fired.
If you have time to do it twice, then you have time to do it once right and put your name on it