I had an opportunity to spend about 4 hours in the H&H factory last summer. Watching them hone barrels was astounding. An abrasive-covered lead plug was inserted into the barrel, spun at a rather slow speed, and was loosely guided by the bores. As a result, it appeared to me that the bores would not be concentric with the outside. It looked like a process which was unchanged in 150 years. I wonder how the hign volume Berettas and Brownings are done? Betcha it ain't the method I saw, and I'd bet they are concentric
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