Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
You load six rounds, thumbcock the hammer, and send lead downrange at 975 feet per second. The HSM Cowboy Action 44 Remington Magnum ammo delivers a 200 grain flat nose bullet designed for single action shooting and traditional hunting applications. 44 Remington Magnum is a straight-wall revolver cartridge introduced in 1955, pairing .429-inch diameter projectiles with enough powder to generate 422 foot-pounds of muzzle energy. This load runs moderate recoil, allowing you to work through cylinders without fatigue during range sessions or cowboy action stages.
Built for the Box
HSM chambers each round in new-production brass with a boxer primer, which means you can deprime, resize, and reload the cases after firing. The flat nose profile cuts clean holes in paper, stabilizes in rifled barrels, and feeds smoothly through single action cylinders. At 975 fps, this load sits below full-power magnum velocities — reducing muzzle blast and felt recoil while maintaining accuracy at handgun distances. You get 50 rounds per box, non-corrosive propellant, and consistent ignition across temperature ranges.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 44 Remington Magnum |
| Bullet weight | 200 grains |
| Bullet type | Flat Nose |
| Muzzle velocity | 975 fps |
| Muzzle energy | 422 ft-lbs |
| Rounds/box | 50 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Range & Target |
| Manufacturer | HSM |
Single action shooters run this load in Ruger Vaqueros, Colt SAAs, and replica firearms for cowboy action competition. The flat nose prints crisp scoring rings on paper, and the moderate velocity keeps brass close to the firing line. Reloaders reclaim cases, seat new bullets, and cycle the ammunition through another range session. Explore more handgun options in our 44 magnum ammo catalog.
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.
- Follow the four universal rules of firearm safety on every range trip.
- Verify current state and local ammunition regulations before ordering — some jurisdictions impose capacity limits, lead bans, or permit requirements.
- This ammunition contains lead, a substance known to the State of California to cause cancer and reproductive harm (Prop 65). Wash hands after handling.
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