Thank you for the responses. The barrel is not hitting the boltface with the go gauge, as MrMajestic said, we were able to continue screwing the barrel in when sizing on a new piece of sized brass. The barrel did screw in farther with nothing in the chamber than it did with the sized brass. The gauges do fit inside the bolt face.

It is possible that the go gauge is hanging up on the extractor. We tried hooking the go gauge under the extractor prior to attempting to chamber it, it still will not close on the go gauge. We will try taking the extractor out and see if that resolves the issue.

As far as the cratered primers, I'm still at a loss. The firing pin protrusion is .043", and the firing pin hole in the bolt face is .069", which appears to be in spec. The .473 factory bolt head is .070", and it is my understanding that firing pin protrusion is supposed to be .040" +/- .005. The cratering is the same, be it factory loads, starting loads for reloads, or where we stopped on load workup due to other pressure signs (slightly sticky bolt and flattening of primers).

Thanks again for the help, it is greatly appreciated.