A quick note of correction and history. The actual projectile
part of a modern round of ammunition
is called the 'bullet' (or 'ball', 'slug'). The term cartridge
actually predates the all-inclusive ammunition concept. During the American Civil War
, for example, the Springfield Rifle
(the most widely-used single-shot muzzle-loader
) was loaded using pre-packaged amounts of powder
that came in wax paper
- those were called 'cartridges.' The term has evolved to indicate a complete, ready to fire round.
The .45 ACP was originally designed and intended to be a cavalryman's weapon - this is why it emphasizes throwing large bullets relatively slowly. Accuracy (never the early M1911's strong suit) was not as important when you were shooting at horsemen, as a hit on either would suffice; if you did hit, you wanted the maximum stopping power, which indicated large, slower bullets.