Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
For HSM Cowboy Action 44 Remington Magnum ammunition, you get 240 grains of lead semi-wadcutter moving at 1150 feet per second — enough velocity to ring steel at 25 yards, mild enough to run through a full match without wrist fatigue. The 44 Remington Magnum cartridge, introduced in 1955 by Smith & Wesson and Remington, remains the benchmark for large-bore revolver power; this load dials back the pressure to suit cowboy-action competition and plinking without sacrificing terminal performance on paper or steel. Each round delivers 705 foot-pounds at the muzzle, cycling cleanly in Ruger Blackhawks, Vaqueros, and Colt SAA clones.
Load Profile
HSM builds this 44 Magnum ammo with new-production brass cases, Boxer primers, and non-corrosive powder — every case is reloadable, a critical feature for competitors shooting hundreds of rounds per season. The semi-wadcutter profile cuts clean holes in paper, simplifying scoring, and the flat nose promotes reliable feeding in tubular-magazine lever guns when loaded as alternates. At 1150 fps, you stay subsonic in most conditions, reducing noise and felt recoil compared to full-power 44 Magnum loads pushing 1400+ fps.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 44 Remington Magnum |
| Bullet weight | 240 grains |
| Bullet type | Semi-Wadcutter |
| Muzzle velocity | 1150 fps |
| Muzzle energy | 705 ft-lbs |
| Rounds/box | 50 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Range & Target |
| Manufacturer | HSM |
Cowboy-action shooters running multiple stages appreciate the consistent ignition and moderate report — you stay on target through rapid strings without the concussion of magnum-pressure loads. The lead semi-wadcutter is not California-compliant for hunting on public land where lead is prohibited, but it remains legal for range use in most jurisdictions. Store in a cool, dry location away from heat sources.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Treat every firearm as if it is loaded; keep muzzle pointed in a safe direction at all times.
- Verify current state and local regulations — some jurisdictions restrict lead projectiles on public ranges or hunting areas.
- California Proposition 65 warning: This product contains lead, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov.
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