The first listing for the Magnum-Ten shell I have is the April 1, 1932, issue of
Western Ammunition for Rifle, Revolver and Shotgun. The Magnum-Ten appears in the second printing of Ithaca Gun Co.'s 1932 catalogue.
And thus began a misprint that stayed in Ithaca Gun Co. catalogues for years. Capt. Chas. Askins' Magnum-Ten was really a No. 4E. The good Captain did have a fully loaded NID 16-gauge that was a No. 5E. Both later resided with Elmer. The Magnum-Ten with its not to my taste restock is in the Elmer Keith diorama at the Cabela's in Boise, Idaho.