I had a little more time today to work on the Krag.  Once again, I thoroughly cleaned and inspected the breech area and locking lug recess.  I did not notice any burs or high spots.  Using a Sharpie, I marked up the rear face of the lug and guide.  I then cycled the bolt on an empty, properly sized, brass cartridge case.  After removing the bolt, only one rub was noticed and that was a small spot on the rear of the locking lug.  Attached are pics of my GO gauge thickness, breech area, and locking lug after cycling.

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