Stephen, Page 583 in "The Parker Story" by Mullins, Price et al shows a copy of DelGrego's notebook that lists the HT/A as a designation for mild steel. The HT/A would certainly equate to a steel that has been heat treated and then annealed. In my experience in the machining industry we have used like markings. Just for the sake of clarity...Hope we have been of help and looking forward to your article.
Ed, Great to see you posting. Get well young man.
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"Much care is bestowed to make it what the Sportsman needs-a good gun"-Charles Parker
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03-15-2013, 04:35 PM
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