If you’re a firearms enthusiast, hunter, or someone who values innovation in ammunition, HSM’s new Magnuforce Subsonic line is worth a closer look. Available now through KIR Ammo and released in early 2025, this lineup includes offerings in .44 Magnum and .45 Long Colt, designed to deliver serious stopping power with reduced noise—perfect for those who want performance without the ear-splitting bang. Let’s dive into these new rounds and see what makes them stand out.
Get a Great deal on HSM Magnuforce Ammo
HSM MAGNUFORCE Subsonic .45-70 Govt 550 Grain Hi-Tek Lead Flat Nose – 20 Rounds (Box) 45-70-16-N
$3.59 / per round
HSM MAGNUFORCE Subsonic .44 Magnum 400 Grain Hi-Tek Lead Flat Nose – 20 Rounds (Box) 44M-19-N
$1.99 / per round
HSM MAGNUFORCE Subsonic .45 Long Colt 400 Grain Hi-Tek Lead Flat Nose – 20 Rounds (Box) 45C-10-N
$2.44 / per round
HSM MAGNUFORCE Subsonic .44 Magnum 280 Grain Hi-Tek Lead Flat Nose – 20 Rounds (Box) 44M-20-N
$1.64 / per round
HSM MAGNUFORCE Subsonic .357 Mag 230 Grain Hi-Tek Lead Flat Nose – 50 Rounds (Box) 357-24-N
$1.37 / per round
HSM MAGNUFORCE Subsonic 10mm Auto 240 Grain Hi-Tek Lead Flat Nose – 20 Rounds (Box) 10MM-17-N
$1.79 / per round
HSM Magnuforce Subsonic .44 Magnum 400-Grain
First up is the HSM Magnuforce Subsonic .44 Magnum 400-Grain. The .44 Magnum is already a legendary cartridge, known for its brute force and versatility in hunting and self-defense. HSM takes it a step further by crafting a subsonic version that weighs in at a hefty 400 grains. This round is engineered to stay below the speed of sound (roughly 1,125 feet per second at sea level), making it an excellent pairing with a suppressor. Imagine stalking through the woods or defending your homestead with a quieter shot that still packs a wallop—think of it as stealth meeting strength. The 400-grain bullet promises deep penetration and energy transfer, ideal for taking down large game like hogs or deer without alerting everything in a five-mile radius.
HSM Magnuforce Subsonic .45 Long Colt 400-Grain
Next, we have the HSM Magnuforce Subsonic .45 Long Colt 400-Grain. The .45 Long Colt has a storied history, rooted in the Old West, and remains a favorite for cowboy action shooting and hunting. HSM’s subsonic take keeps the nostalgia alive while modernizing the experience. Clocking in at 400 grains, this round mirrors its .44 Magnum sibling in weight, offering substantial mass for stopping power. Subsonic ammo in .45 Long Colt is a rarity, and this version shines for shooters who want a quieter report—especially when paired with a suppressor—without sacrificing the cartridge’s reputation for delivering a solid punch. Whether you’re plinking at the range or hunting in close quarters, this ammo brings a unique blend of tradition and innovation.
HSM Magnuforce Subsonic .44 Magnum 280-Grain
Rounding out the trio is the HSM Magnuforce Subsonic .44 Magnum 280-Grain. This lighter option in the .44 Magnum lineup offers a different flavor of subsonic performance. At 280 grains, it’s still a heavy hitter compared to standard pistol rounds, but it’s more manageable than the 400-grain beast. The reduced weight likely translates to a slightly higher velocity (still subsonic, of course) and less recoil, making it a versatile choice for shooters who prioritize control alongside quiet operation. It’s a great middle ground—potent enough for hunting or self-defense, yet easier to handle for extended range sessions.
Why Subsonic? Why Now?
Subsonic ammunition has been gaining traction in recent years, especially among hunters and tactical shooters who use suppressors. By keeping velocities below the sound barrier, these rounds minimize the supersonic crack that typically accompanies high-speed projectiles. Pair them with a suppressor, and you’ve got a setup that’s hearing-safe and discreet—perfect for scenarios where noise discipline matters, like hunting in populated areas or training without disturbing the neighbors. HSM’s Magnuforce line taps into this trend, bringing subsonic options to two iconic calibers that aren’t traditionally associated with stealth.
What Sets HSM Apart?
HSM (Hunting Shack Munitions) has built a reputation over decades for quality and consistency, and the Magnuforce Subsonic series reflects that legacy. Based in Montana, HSM is known for tailoring ammo to real-world needs—think rugged, reliable performance for hunters and shooters who demand results. These rounds aren’t just gimmicks; they’re crafted with precision, using high-quality components to ensure reliability and accuracy. Whether it’s the 400-grain powerhouses or the nimbler 280-grain option, you’re getting ammo designed to perform under pressure.
Practical Applications
So, who’s this ammo for? Hunters will love the ability to take game quietly and effectively, especially with the 400-grain options’ penetration potential. Self-defense shooters might appreciate the reduced noise profile, keeping things low-key in high-stakes situations. And for range enthusiasts, the variety—280-grain for lighter recoil, 400-grain for max impact—offers flexibility to experiment with different setups. Pair any of these with a suppressed revolver or lever-action rifle, and you’ve got a combo that’s as fun as it is functional.
Final Thoughts
HSM’s Magnuforce Subsonic ammo, available through KIR Ammo, is a bold step into a niche that’s growing fast. The .44 Magnum 400-Grain, .45 Long Colt 400-Grain, and .44 Magnum 280-Grain rounds bring something fresh to the table: big-bore power with a whisper. Whether you’re a suppressor aficionado, a hunter seeking stealth, or just a shooter who loves trying new things, this lineup deserves a spot in your range bag.
