HSM Cowboy Action .357 Magnum 158 gr hard lead semi-wadcutter (SWC) ammunition is offered for use in period-style and modern revolvers chambered for .357 Magnum. These rounds are loaded at moderated pressures to support reliable function in cowboy-era firearms while remaining suitable for contemporary handguns used for target and recreational shooting. The product is supplied in retail boxes and is also available in case quantities for bulk purchasing.
Packaging
Box: Sold per box containing 50 rounds. Case: Can be ordered by case; a case equals 10 boxes (a total of 500 rounds) and is achieved by ordering the required number of boxes.
Key Specifications
- The cartridge is .357 Magnum.
- The bullet weight is 158 grains.
- The bullet type is listed as a hard lead semi-wadcutter (SWC).
- The listed muzzle velocity is 1175 fps.
- The listed muzzle energy is 484 ft lbs.
- Each retail box contains 50 rounds.
- A full case consists of 10 boxes.
- The cartridge cases are made of brass.
- These cartridges are described as reloadable.
This load provides a traditional hard-cast SWC profile preferred for cowboy action and target shooters who value period-correct performance and straightforward terminal characteristics. The combination of a 158-grain SWC and moderated pressures makes this ammunition appropriate for a wide range of .357 Magnum revolvers where reliable ignition and reloadable brass are priorities.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
