This may or may not be helpful, but AI states this.
In the early 20th century, the designation DS (also seen as D.S.) referred to DuPont Smokeless shotgun powder.
This propellant was part of the transition from black powder to modern smokeless powders. Key details regarding its history and use include:
Manufacturer: It was produced by the DuPont company in the United States.
Powder Type: It was a "bulk" smokeless powder, designed so that it could be measured by the same volume as the black powder it replaced.
Performance: DS powder was known for being a relatively "fast" burning propellant, making it suitable for standard shotgun loads and clay target shooting.
Market Context: During this era, shooters often chose between "bulk" powders (like DuPont Smokeless or Schultze) and "dense" powders (like Ballistite or Infallible), which required smaller, more precise charges.
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