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.38 S&W (Colt N.P.)
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Caliber Specifications:
Caliber: | .38 S&W (Colt N.P.) |
Standard / Datasheet: | C.I.P. |
Bullet Diameter: | 0.360" | 9.14mm |
Primer Size: | Small Pistol (SP) |
Max. Case Length: | 0.775" | 19.68mm |
Max. Cartridge Length / OAL: | 1.240" | 31.50mm |
Max. Standardized Pressure: | 17405 psi | 1200 bar |
Case Capacity: | 12.0 Grains of Water | 0.78 cm3 |
CID: | CID_582 |
Last updated: | 2/20/2025 |
- The .38 S&W, also known as the .38 Colt New Police, is a revolver cartridge that was introduced in 1877 by Smith & Wesson. It was designed for use in small frame revolvers and was used by law enforcement agencies in the United States and other countries in the early 20th century.The .38 S&W cartridge has a bullet diameter of .361 inches and a case length of .775 inches. It has a relatively low velocity of around 700 feet per second and a relatively low muzzle energy, making it suitable mainly for short-range self-defense applications.
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Most popular powders from our community members for caliber .38 S&W (Colt N.P.):
Weight vs. Velocity - Suitable Bullets for this Caliber
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Barrel Length Variation vs. Velocity - by Bullet Weight
.38 S&W (Colt N.P.) load data available with the following bullets:
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There is also subsonic-load data available for this caliber.
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