What Did the Earliest 'Pistol Cartridges' Look Like? A Brief History of Pistol Cartridge Development

A Brief History of Pistol Cartridge Development

■ Liu Jianyuan, Zhao Zhensheng

The Borchardt C-93 semi-automatic pistol and its accompanying 7.65mm Borchardt pistol cartridge.

In most people's minds, a pistol cartridge consists of four components: the bullet, the case, the propellant, and the primer. In other words, it is a complete unit in which the case holds together the bullet, propellant, and primer.

But the earliest "pistol cartridges" looked quite different. In the early 15th century, a small bronze firearm called the hand cannon (手铳) appeared on Ming dynasty battlefields. To use it, the shooter first loaded gunpowder and a fuse through the muzzle, then poured in iron pellets. Igniting the fuse would fire the iron pellets at the enemy. If the hand cannon can be considered the ancestor of the pistol, then the iron pellets loaded inside it were the prototype of the pistol cartridge. The matchlock pistols, flintlock pistols, and fire-lock pistols subsequently developed by countries around the world broadly adopted this same configuration.

In 1836, Frenchman Casimir Lefaucheux invented an integrated cartridge with a brass case—the pinfire cartridge—and simultaneously developed a revolver capable of firing it. The base of this cartridge's case had an external firing pin on the outside, with one end of the pin touching the powder inside the case. Striking the pin with the firearm's hammer ignited the powder and fired the projectile.

The mid-19th century was a period of transition for firearms from muzzle-loading to breech-loading ammunition. Metal cases had not yet become widespread at the time, and in order to achieve continuous loading and firing, designers developed an early pistol cartridge known as the "rocket ball." Its bullet cross-section was a hollow cone, with the propellant loaded into the hollow cavity at the base of the bullet, followed by a primer. Upon firing, the primer ignited the propellant in the cavity, and the pressure generated by the powder gases propelled the bullet forward.

The true fixed pistol cartridge in the modern sense was born in the latter half of the 19th century and was known at the time as the centerfire cartridge. This design has continued in use to the present day. However, the propellant used in cartridges of that era was primarily black powder, which was insufficient in both power and reliability.

At the end of the 19th century, the advent of smokeless powder brought revolutionary change to pistol cartridges. Among the more notable examples was the 7.65mm Borchardt pistol cartridge accompanying the Borchardt C-93 semi-automatic pistol, which was the first to use a rimless case and smokeless powder. In terms of cartridge configuration, the designers drew on the construction of the German Mauser round-nose rifle cartridge to develop an early automatic pistol cartridge. This gave the pistol cartridge another defining characteristic: the adoption of the bottleneck case form of the rifle cartridge. This pistol cartridge was ultimately finalized and put into production by the German firm Loewe Metallurgische Fabrik. When fired from the Borchardt C-93 pistol, it achieved a muzzle velocity of approximately 385 meters per second, with ballistic performance, lethality, and accuracy markedly superior to the black-powder revolver cartridges of the same period.

From the early to mid-20th century, round-nose pistol cartridges became the mainstream. This was because this bullet configuration possessed favorable aerodynamic characteristics—more stable flight, a straighter trajectory—which was conducive to accurate hits and yielded better ballistic performance, penetration, and terminal effect.

During this same period, pointed-bullet pistol cartridges were also developing. For example, some police or special-purpose pistol cartridges in the early 20th century adopted pointed bullets to improve accuracy at close range. As pistol cartridge muzzle velocities increased, researchers began examining the shape of the bullet's base, studying ballistic aerodynamics and terminal ballistic effects. From the mid-to-late 20th century onward, some high-performance pistol cartridges began adopting a "boat-tail" design—that is, designing the base of the bullet in a trapezoidal shape—which reduces turbulence, lowers drag, and increases the stability of the bullet in flight, particularly ensuring a degree of ballistic stability at the terminal end of the trajectory.

Looking at the development of pistol cartridges overall, while pointed-bullet and "boat-tail" designs have seen application, the traditional round-nose pistol cartridge has proven more enduring by virtue of its综合 performance advantages, and remains in widespread use across various pistol types to this day.