The .38 Special history dates back to 1898 when Smith & Wesson introduced the cartridge alongside their Military & Police revolver. Developed as a direct response to the perceived lack of stopping power demonstrated by the .38 Long Colt during the Philippine-American War, the cartridge quickly established itself. By utilizing a longer case and double the black powder load of its predecessor, the new round offered superior velocity and terminal performance. For nearly a century, it reigned as the standard service cartridge for American law enforcement, evolving from black powder to smokeless powder and becoming one of the most widely used revolver cartridges in global history.
.38 Special History
| Year / Date | Event | Developer / Company | Location | Notes | Source |
| 1898 | .38 Special Developed | Smith & Wesson | Springfield, MA | Created for the new Hand Ejector platform | Wikipedia |
| 1902 | Model 1899 Military & Police | Smith & Wesson | USA | Platform updated to become the iconic Model 10 | American Rifleman |
| 1909 | Military Adoption | US Army / Philippine Constabulary | USA / Philippines | Adopted for official service use | Wikipedia |
| 1930 | .38-44 Heavy Duty Introduced | Smith & Wesson | USA | High-pressure precursor to the .357 Magnum | Free Range American |
| 1957 | Designation Standardization | Smith & Wesson | USA | Model numbers assigned (Model 10 becomes official) | American Rifleman |
| 1972 | +P Loading Standardized | Industry Standard | USA | Higher pressure loads officially recognized | SAAMI |
Understanding The Cartridge History
Early Development (1898 to 1900)
In the late 1890s, Smith & Wesson sought to improve upon their existing line of medium-frame revolvers. The resulting cartridge lengthened the older .38 Long Colt case by about 0.11 inches, allowing it to hold more propellant. Initially loaded with black powder, the cartridge was designed to offer manageable recoil paired with superior accuracy and stopping power for military and police applications.
Adoption and Military Era (1900 to 1920s)
The cartridge found its true home with the introduction of the Smith & Wesson Military & Police revolver in 1899 (later designated the Model 10). Following reports of inadequate stopping power from the .38 Long Colt during combat in the Philippines, the US military and various police forces rapidly adopted the .38 Special. Smokeless powder quickly replaced black powder, making the round cleaner and more efficient.
Law Enforcement Golden Age (1930s to 1980s)
For decades, the .38 Special was the undisputed king of police sidearms. Virtually every major police department in the United States issued six-shot revolvers chambered in this caliber. During the 1930s, the demand for greater barrier penetration led to the creation of high-pressure loads like the .38-44, which eventually paved the way for the invention of the .357 Magnum.
Later and Recent Usage
As law enforcement transitioned to semi-automatic pistols in the late 20th century, the .38 Special lost its primary duty role. However, it underwent a massive shift into the civilian concealed carry and backup gun markets. Lightweight snub-nosed revolvers chambered in .38 Special remain exceptionally popular today due to their reliability, simplicity, and ease of concealment.
Major .38 Special Milestones
The .38 Special history includes several defining evolutionary steps:
- The Transition to Smokeless Powder (Early 1900s): The quick shift from black powder to smokeless powder increased velocities and reduced barrel fouling, solidifying the cartridge’s commercial viability.
- The Creation of the .38-44 High-Pressure Loads (1930): Shooters and manufacturers pushed the boundaries of the standard case, creating heavy-duty loads that ultimately inspired the .357 Magnum.
- The Introduction of +P Ammunition: In the 1970s, higher-pressure (+P) loads were standardized to improve the defensive stopping power of standard weight bullets out of short-barreled revolvers.
Notable .38 Special Firearms
- Smith & Wesson Model 10 (Military & Police): The most produced handgun of the 20th century. Over six million units of this iconic double-action revolver were manufactured, serving as the standard sidearm for generations of police officers and military personnel.
- Smith & Wesson Model 36 (Chiefs Special): Introduced in 1950, this small J-frame revolver brought the power of the .38 Special into a compact, concealable package designed for plainclothes detectives and civilian self-defense.
- Colt Detective Special: A legendary short-barreled, six-shot revolver that competed directly with Smith & Wesson’s compact offerings, becoming a staple of classic detective fiction and real-world carry.
.38 Special Ballistics And Performance History
The standard .38 Special cartridge utilizes a .357-inch diameter bullet, typically weighing between 110 and 158 grains.
- Standard Pressure: Standard factory loads operate at a modest maximum pressure of 17,000 psi, producing muzzle velocities around 800 to 900 feet per second.
- +P Loadings: Rated for 18,500 psi, +P ammunition generates higher velocities and deeper terminal penetration, making it the preferred choice for modern defensive carry.
- Terminal Ballistics: While historically criticized for slower velocities compared to modern semi-automatic rounds, modern jacketed hollow points have significantly improved the defensive effectiveness of the cartridge.
.38 Special Developers
The creation of the cartridge was spearheaded by Smith & Wesson’s internal engineering team in collaboration with ammunition manufacturers:
- Smith & Wesson Engineering Team: Designed the Hand Ejector frame and the stretched cartridge case to outperform legacy military rounds.
- Union Metallic Cartridge Company (UMC) / Winchester: Collaborated early on to mass-produce the cartridge and transition it successfully from black powder to smokeless powder formulations.
.38 Special History By Decade
- 1890s: The cartridge is invented in 1898 alongside the new S&W Hand Ejector revolver platform.
- 1900s to 1910s: Rapid adoption by police departments and military branches looking for a reliable revolver cartridge following overseas conflicts.
- 1930s: High-pressure experimentation leads to specialized law enforcement loads and lays the technical groundwork for the .357 Magnum.
- 1950s: The introduction of snub-nosed J-frame revolvers redefines the cartridge as a premier choice for concealed carry and plainclothes police work.
- 1970s to 1980s: The peak of police duty service, featuring standard 158-grain round-nose lead bullets later supplemented by +P hollow points.
- 1990s to 2020s: Law enforcement phases out revolvers entirely, but the cartridge finds a permanent, thriving home in the civilian concealed carry, target shooting, and backup weapon markets.
.38 Special Recent History
Today, the .38 Special remains a cornerstone of the ammunition and firearms manufacturing industries. While traditional full-size duty revolvers are largely historical artifacts, companies like Smith & Wesson, Ruger, and Taurus continue to produce lightweight, modern revolvers crafted from aluminum, scandium, and polymer. Ammunition developers regularly release advanced defensive rounds optimized specifically for short barrels, proving that this 19th-century cartridge remains fully capable in the modern era.
Best Sources For .38 Special History
For historians and enthusiasts researching the cartridge, several reliable references exist:
- Wikipedia (.38 Special page): Ideal for quickly checking technical specifications, historical adoption timelines, and case dimensions.
- American Rifleman: Offers deep archival research regarding the production history of the Smith & Wesson Model 10 and related military handguns.
- SAAMI (Sporting Arms and Ammunition Manufacturers’ Institute): The official governing body for technical standards, providing accurate historical data on pressure limits and +P classifications.
Common Questions
When was the .38 Special invented?
The cartridge was introduced in 1898 by Smith & Wesson.
Why is it called “.38 Special”?
It was developed as a “special”, more powerful alternative to the older .38 Long Colt cartridge used by the US military.
Can you fire .38 Special in a .357 Magnum?
Yes. Because the .357 Magnum case is simply a lengthened version of the .38 Special, any firearm chambered for .357 Magnum can safely fire .38 Special ammunition.
Can you fire .38 Special +P in an older revolver?
You should only fire +P ammunition in a firearm explicitly rated for it by the manufacturer. Older revolvers from the early 20th century may not withstand the higher pressures.
Is the .38 Special still used today?
Yes. It remains immensely popular for civilian concealed carry, backup weapons, and recreational target shooting.