.357 SIG

Reloading data for .357 SIG cartridges and specifications for cases and loads in this caliber.
Product number: CID_518
Load data for caliber ".357 SIG"
The .357 SIG is a pistol cartridge that was developed in 1994 by SIG Sauer and Federal Cartridge. It is based on a necked-down .40 S&W case and is designed to provide higher velocities and better performance than other common handgun cartridges.

The .357 SIG is known for its high muzzle velocity and flat trajectory, making it popular among law enforcement agencies and self-defense enthusiasts. It is commonly used in semi-automatic pistols such as the SIG Sauer P229 and P226, as well as other firearms that can be chambered for this cartridge.

Despite its popularity, the .357 SIG is not as widely used as some other handgun cartridges such as the 9mm or .45 ACP. It can be more expensive and may be more difficult to find ammunition and firearms chambered for this cartridge. Nonetheless, it has a dedicated following and is considered a high-performance cartridge that offers excellent accuracy and stopping power.

You find .357 SIG 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: .357 SIG
Cartridge Type: Pistol/Revolver
Bullet Diameter: 0.355 '' | 9.02 mm
Primer Size: Small Pistol (SP)
Max. Case Length (l3):0.86'' | 21.84 mm
Max .Cartridge Length / OAL:1.14'' | 28.96 mm
Maximum Standardized Pressure:44237.2 psi | 3050 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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