Keep in mind those really high pressure 1 1/4 ounce 12-gauge loads were the very heaviest loads our North American ammunition companies offered. There were a lot 1 and 1 1/8 ounce 12-gauge loads offered with charges as light as 20 to 24 grains of Infallible or Ballistite or 2 1/2, 2 3/4 or 3 drams of bulk smokeless powder.
Then on the other end of the spectrum we see many instances of old time Pigeon shooters using loads with heavier charges then any of the factories offered. Probably the reason Parker research letters often include the gun being back to Meriden for rejointing!!
