30-06 Special lot

Howdy all, Since losing all of my hard drive some years ago with my spread sheets I come across rounds in my collection that I don’t remember the stats on. This one a 30-06 h/s F A 31. [dot]
Thanks
Steve

Steve; Dots included in Frankford Arsenal are for internal identification of a process change or a special lot of brass. In 1931, the number of case draws was increased from four to five. Cases made after the change that year had a dot after the 31 in the headstamp. HWS Vol. I Revised, page 115.

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Thanks Mel!