By the early 1930s the progressive burning powder 28-gauge shells, such as Western Cartridge Co.'s Super-X, were on the market, packing a full 3/4 ounce of shot. Plenty for ducks over decoys at 35 yards or less. Many shooters out in the great California Central Valley duck clubs were using long barrel Parker Bros. 20- and 28-gauges in the days when the 28-gauge shells packed 1 3/4 drams of bulk smokeless powder and 5/8 ounce of shot, from the early days of the 28-gauges.
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