So here's what I did:


  1. My Go Gauge is a Clymer and I put it in my RCBS Precision Mic and it indicated almost exactly on zero.
  2. I put this in my chamber added a dab of Lubriplate to the threads and tightened the barrel against it ever so slightly.
  3. I then tightened the barrel nut to 50 ft/lbs.
  4. I checked and my bolt closes on the Go Gauge without any resistance.
  5. Next I added two pieces of scotch tape to the Go Gauge and checked it again with the Precision Mic. I got a reading about 0.0035" more than without the tape.
  6. I put the taped gauge back in the chamber and the bolt will no longer close.


I take it I'm now good to go?