.357 Magnum

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  • Wet-tumbled/polished, once fired .357 Magnum pistol brass sourced mainly from indoor ranges
  • May include a variety of manufacturers and headstamps
  • Spent primers will still be intact in the cases and must be removed before beginning the reloading process
  • Extra brass cases will be included to make up for any stray calibers, unusable pieces, or other cosmetic defects that may slip through our screening process
  • It's very common to find some .38 Special brass mixed in due to the similarity in size and appearance when processing large quantities of brass. The total amount of .357 Magnum brass should still be equal to or greater than the amount you ordered due to our inclusion of extra brass by weight.
  • We ship orders within one to two business days of receiving your order on our end. Orders are shipped using USPS Priority Mail which includes free shipment tracking.
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.357 Magnum

.357 Magnum (other rimes referred to as .357 Smith & Wesson Magnum, .357 S&W Magnum, .357 Mag, 9x33mmR) is a smokeless powder cartridge created by Elmer Keith, Phillip B. Sharpe, and Douglas B. Wesson in the early to mid- 1930s and was officially introduced in 1935. The .357 Magnum is credited as starting the “magnum era” of handgun ammunition. The .357 Magnum came to be because there was not many options for law enforcement to counter criminals using automobiles as cover and early models of ballistic vests. Although it was a joint project, much of the early development of the .357 Magnum is credited to Elmer Keith. In order to market the .357 Magnum cartridge Smith & Wesson developed a revolver sharing the same name, which was a huge success amongst law enforcement. Although it is typically referred to by most as a pistol cartridge, the .357 Magnum is also used in plenty of rifle platforms (such as the Marlin Model 1894C).

The choice of bullet for the .357 Magnum changed multiple times during the the development process. Elmer Keith had a custom bullet design that was combined with the attributes of the Sharpe bullet design, after multiple reworks of this design they landed on the design we know today. The .357 Magnum cartridge case has a capacity of 25.6 grains (1.66 milliliters).  The most common rifling twist rate for the .357 Magnum is 476 mm (1 in 18.74 inches) in six grooves. The primer type of the .357 Magnum is classified as small pistol magnum.

The C.I.P. rulings states that the .357 Magnum cartridge case can handle up to 44,000 psi (300 MPa). The .357 Magnum is mostly used for metallic silhouette, hunting, and self defense. Depending on the load being used, .357 Magnum can be extremely effective against large and dangerous game such as bears. .357 magnum has less energy relative to other revolvers, but is a smaller diameter with very high velocities which allows incredible penetration. The original .357 Magnum load was a 158 grain bullet with muzzle velocities clocked at 1525 fps (using a long barrel of 8.75 inches). 

The common loads of .357 Magnum today are considered mild in comparison to the original loads. Typically you will find .357 Magnum bullets in weights starting at or around 100 grains and usually capping out at 200 grains (except in specialty loads). By far the most common self-defense bullet weight loaded in the .357 Magnum is the 125 grain jacketed hollow point. On the other hand, when used as a hunting round, the .357 Magnum is commonly paired with a heavier grain bullet. The energy associated with .357 Magnum varies  (depending on the load type) but is typically recorded to be 400-800 foot pounds force.

Although it is a very popular cartridge, .357 Magnum does not typically have an excessive amount of once fired brass available (depending on geographical location) on the market. The theory behind why this happens is due to .357 Magnum being predominately fired from low capacity revolvers there isn’t huge volumes of brass “hitting the floor” at ranges. That along with a the reloading community favoring the .357 Magnum , means most shooters of this cartridge tend to retrieve their own brass and return home with it after a day at the range.

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