HSM Cowboy Action Ammunition 357 Magnum 158 Grain Hard Cast Lead Semi-Wadcutter Box of 50
- Capacity-Rounds:
- 50
- Style:
- Semi Wad Cutter-Hard
- Caliber-Gauge:
- 357 Magnum
- Grain:
- 158
- Muzzle Velocity:
- 1175
- Application:
- Target Shooting
- Muzzle Energy:
- 484 ft lbs
- HazAir:
- Yes
HSM Cowboy Action 357 Magnum ammunition brings authentic, reliable performance to lever guns, single-action revolvers, and modern handguns built for the sport. Whether you're competing in sanctioned Cowboy Action Shooting events or just spending a weekend with classic firearms, this 158-grain hard cast lead semi-wadcutter load delivers the kind of straightforward, honest performance that fits the category. HSM has built its reputation on serving shooters who demand both consistency and value—and this round reflects that philosophy.
Hard cast lead bullets are purpose-built for Cowboy Action shooting. The semi-wadcutter profile works across a broad range of firearms common to the discipline, while the hard cast construction resists deformation and promotes reliable function in lever-action rifles and revolvers alike. You get 50 rounds per box, ready to load and shoot without fuss.
If you're serious about the sport—or just love shooting firearms with genuine Western heritage—HSM keeps you supplied without breaking the bank. The ammunition is loaded to standards appropriate for the guns that defined the sport, so you can focus on your marksmanship and enjoy a day at the range.
Key Features
- 158-grain hard cast lead bullet—engineered for reliable function in lever-action rifles and single-action revolvers
- Semi-wadcutter profile—versatile performance across Cowboy Action firearms
- 50-round box—convenient quantity for practice and competition
- Designed for Cowboy Action Shooting discipline and classic Western firearms
Specifications
| Caliber | 357 Magnum |
| Bullet Weight | 158 grains |
| Bullet Type | Hard Cast Lead Semi-Wadcutter |
| Quantity | 50 rounds per box |
| Brand | HSM Ammunition |
Frequently Asked Questions
Will HSM Cowboy Action 357 Magnum work in my lever-action rifle?
Yes. This round is designed for use in lever-action rifles, single-action revolvers, and other firearms chambered in 357 Magnum that are common to Cowboy Action Shooting.
What's the advantage of hard cast lead bullets for Cowboy Action?
Hard cast lead resists deformation and provides reliable function across the variety of firearms used in Cowboy Action Shooting, from lever guns to revolvers. The semi-wadcutter profile is similarly versatile across the discipline's common platforms.
Is this ammo suitable for sanctioned Cowboy Action Shooting competitions?
HSM Cowboy Action ammunition is purpose-built for the sport and for shooters involved in formal sanctioned Cowboy Action organizations, as well as casual weekend shooting with classic Western firearms.
How many rounds are in a box?
Each box contains 50 rounds, giving you a convenient quantity for practice sessions and competition events.
Ammunition Restrictions:
You must be 18 years or older to purchase shotgun or rifle ammunition, and 21 years or older for handgun ammunition. All ammunition must be shipped via Domestic Ground, and shipping is not available for international residents. Residents of CA, DC, IL, MA, NY, CT, and NJ may be subject to additional restrictions. Always ensure you use the appropriate ammunition for your firearms, and check your state and local laws for any other relevant regulations on firearms and ammunition. Due to Department of Transportation regulations, returns on ammo cannot be accepted. Please verify local laws before placing an order.
We are unable to ship ammunition to the following:
- Hawaii
- Alaska
- P.O. Boxes
- APO/FPO Addresses
- International Addresses
- U.S. Territories
- U.S. addresses with zip codes starting with (100, 101, 102)
Illinois residents must provide a copy of a valid FOID Card or Valid Concealed Carry License, along with their IL driver’s license or IL state identification card to purchase ammunition. The ammunition can only be shipped to an address listed on either of those two documents.
Email: [email protected]

