Brian, here is the problem with adding that info in letters. They are only found in the S/N range of 16985 to 18282 in stock book #6. For some reason, whoever copied that book, starting at 16985 they loaded the stock book biased to the left which gave those numbers. Usually, the right end got chopped off after the total weight. By biasing the book to the left, they excluded the first column which gives the barrel steel and grade, example Dam3. Now if I am doing a research letter and only have the stock book in that S/N range, I can't tell what the grade or barrel steel that particular gun had. Therefore, I can't do a letter on that gun.
Hopefully some day, we'll get those stock books and try and recopy them.
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