Load data for caliber ".357 Maximum"The .357 Maximum is a revolver cartridge that was introduced in the 1980s by Ruger and Thompson/Center Arms. It is based on the .357 Magnum cartridge but has a longer case and can hold more powder, resulting in higher velocities and greater energy.
The .357 Maximum is designed to be used in revolvers and single-shot pistols, and it is often used for hunting and target shooting. It can also be used for self-defense, but it is not as commonly used for this purpose as other cartridges such as the .357 Magnum or 9mm.
While the .357 Maximum cartridge has gained a dedicated following, it is not as widely popular as other revolver cartridges such as the .44 Magnum or .357 Magnum. It can be difficult to find ammunition and firearms chambered for this cartridge, and its use is often limited to specific niches within the shooting community.
You find .357 Maximum 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)
|Bullet Diameter:||0.357 '' | 9.07 mm|
|Max. Case Length (l3):||1.6'' | 40.64 mm|
|Max .Cartridge Length / OAL:||1.99'' | 50.55 mm|
|Maximum Standardized Pressure:||44962.4 psi | 3100 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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