I recently unscrewed a SS barrel from a 16. It came out hard. It appeared that someone had left a scope mount screw in at some point. Anyway, cleaned the threads up and it threads in the action without binding. The threads that were not buggered up under the nut mic'd at 1.040. It took until 1.030 to clean up the bad ones, which consist of roughly 1/2 of the total engagement surface. It was odd to see 1.040 to start with as 1.055 is what the majors measure on all the other small shanks I have. So my question is has the clean up jeopardized the integrity of the surfaces enough to cause safety a concern? I don't have the experience to know....my gut says make a goat stake out of it. Opinions please. Thanks!