While not exactly .410 it is interesting to note that at least as early as 1908 Sears offered their "Our Ladies, Little Breech Loading Double Barrel Shotgun" chambered in a choice of .44XL or .40-85. .40-85 shells were offered only as empties for loading & it was stated they were "About" 3" long would hold 40grs BP & ½oz of shot. .44XL was available loaded @ $1.50/100 while the .40-85 empties were $2.50/100. A loading set was offered consisting of de & re cappers, wad cutter & charge cup @ 55¢. When Winchester introduced the actual 3" .410 it was of course loaded with "Progressive" smokeless powder & did as I recall contain the full 3/4oz charge of shot.
