Originally Posted by gmckinney626
So Gary, just face the barrel shank to achieve, I speculate, somewhere between .220 and .227 in the seat/ rim ledge?
That works great IF you know where your boltface datum is and you have a way to take accurate measurements on the barrel.
I made myself several specialized protrusion gauges that will reach around the barrel threads and touch the barrels shoulder and then measure how far a headspace gauge is protruding from the barrel shoulder.
There are commercially made tools like this now, but I made mine many many years ago before they were available off the shelf.