During the first twenty plus years that Parker Bros. 28-gauge guns were offered, the payload of factory 28-gauge shells was 5/8-ounce of shot. Pushed by 1 3/4 drams of bulk smokeless powder or 14-grains of dense smokeless powder such as Infallible or Ballistite from a 2 1/2-inch case or pushed by 2 drams of bulk smokeless powder or 16-grains of dense smokeless powder such as Infallible or Ballistite from a 2 7/8-inch case
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