A is a complete, self-contained unit of ammunition—comprising a bullet (or "ball"), gunpowder, a case, and a primer—designed for military and civilian use, typically characterized by a full metal jacket bullet. Unlike specialized ammunition, ball cartridges are the standard for training, range, and operational use due to their reliability, cost-effectiveness, and ease of manufacturing. The Evolution of the Ball Cartridge
The ancestor of modern ammunition, these combined a lead ball and gunpowder wrapped in paper. They were "bit" open, with the powder poured into the barrel and the paper used as wadding. ball cartridge
Developed at the start of the Civil War, this standardized paper cartridge allowed soldiers to increase loading speed to roughly three shots per minute. A is a complete