.38-40 Win.

Reloading data for .38-40 Win. cartridges and specifications for cases and loads in this caliber.
Product number: CID_595
Load data for caliber ".38-40 Win."
The .38-40 Winchester was introduced in the late 19th century and was originally designed as a black powder cartridge for single-shot rifles. It has since become popular among law enforcement officers, military personnel, and civilian shooters as an effective self-defense round due to its accuracy, low recoil, and low cost.

The .38-40 Winchester is also commonly used for hunting small and medium game such as deer or antelope. Its penetration power makes it suitable for use against adversaries wearing body armor.

Over the years, the .38-40 Winchester has developed a reputation as a reliable caliber with excellent performance characteristics. With proper care and maintenance, this caliber can provide many years of reliable service.

You find .38-40 Win. with all common powders and bullets by clicking the 'Loads in this caliber' button above.

Technical Specifications (based on the respective safety standard - see more details in tab 'Datasheet' if available)

Caliber: .38-40 Win.
Cartridge Type: Rimmed
Bullet Diameter: 0.400 '' | 10.16 mm
Primer Size: Large Rifle (LR)
Max. Case Length (l3):1.3'' | 33.15 mm
Max .Cartridge Length / OAL:1.59'' | 40.39 mm
Maximum Standardized Pressure:16679.6 psi | 1150 bar
The Commission internationale permanente pour l'épreuve des armes à feu portatives ("Permanent International Commission for the Proof of Small Arms" – commonly abbreviated as C.I.P.) is an international organisation which sets standards for safety testing of firearms. (The word portatives ("portable") in the name refers to the fact the C.I.P. tests small arms almost exclusively; it is ordinarily omitted from the English translation of the name.) As of 2015, its members are the national governments of 14 countries, of which 11 are European Union member states. The C.I.P. safeguards that all firearms and ammunition sold to civilian purchasers in member states are safe for the users.
To achieve this, all such firearms are first proof tested at C.I.P. accredited Proof Houses. The same applies for cartridges; at regular intervals, cartridges are tested against the C.I.P. pressure specifications at the ammunition manufacturing plants and at C.I.P. accredited Proof Houses.

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