.357 Magnum

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.357 Magnum
.357 Magnum ammunition
TypeHandgun / Carbine
Place of originUnited States
Production history
DesignerElmer Keith, Phillip B. Sharpe
Parent case.38 Special
Case typeRimmed (R), straight
Bullet diameter.357 in (9.1 mm)
Neck diameter.379 in (9.6 mm)
Base diameter.379 in (9.6 mm)
Rim diameter.440 in (11.2 mm)
Rim thickness.060 in (1.5 mm)
Case length1.29 in (33 mm)
Overall length1.59 in (40 mm)
Case capacity26.2 gr H2O (1.70 cm3)
Primer typeSmall Pistol Magnum
Maximum pressure45,000 CUP, 35,000 psi (piezo)[1]
Ballistic performance
Bullet mass/type Velocity Energy
125 gr (8 g) JHP Federal 1,450 ft/s (440 m/s) 583 ft⋅lbf (790 J)
158 gr (10 g) JHP Federal 1,240 ft/s (380 m/s) 539 ft⋅lbf (731 J)
125 gr (8 g) JHC Buffalo Bore* 1,700 ft/s (520 m/s) 802 ft⋅lbf (1,087 J)
Test barrel length: 4 in (102 mm) (vented) and *6 in (buffalo bore)
Source(s): Federal,[2] Buffalo Bore, [3]

The .357 Magnum cartridge is a pistol cartridge. It has a high stopping power and enough penetration power to shoot through many kinds of body armor. It was based on the .38 Special. Revolvers that shoot the .357 Magnum can also shoot the .38 Special.

It was first made to stop criminals wearing body armor and hiding in cars. It was the fastest handgun cartridge made until the .44 Magnum.

It is popular for hunting and self-defense. Most guns that shoot the .357 Magnum are revolvers or lever-action rifles, but there are also some semi-automatic pistols that can shoot .357 Magnums, such as the Desert Eagle.

References[change | change source]