Hsm Subsonic 357Mag Hitek 230Gr Hcfn 50/10
$59.66
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HSM Subsonic 357 Magnum ammunition delivers the power you need for handgun hunting and target shooting without the report that echoes across the canyon. Built on HSM's reputation for quality handloads, these subsonic 357 Mag rounds use a 230-grain hard cast flat nose bullet coated in Hi-Tek Supercoat for smooth feeding, consistent velocity, and dependable expansion. Whether you're working a trail gun for hog country or practicing at the bench, subsonic rounds give you manageable recoil and ballistics you can count on.
The hard cast construction and flat nose profile make this load a serious choice for hunting medium game at moderate distances. Hi-Tek coating reduces leading and fouling in your bore—a real advantage if you reload or shoot older firearms. Factory loads from HSM mean you get the same charge and bullet every time, no press time required. These come in convenient 50-round boxes with 10 per box packaging, so you can grab what you need without excess.
Subsonic loads are a smart option for anyone running a suppressor or hunting in noise-sensitive areas, or for shooters who simply prefer the lower velocity and flatter shooting arc of a heavier, slower round. The 230-grain bullet weight puts the emphasis on penetration and energy retention downrange rather than speed, making this load a solid pick for larger varmints, predators, and game where a reliable hit matters more than velocity.
Key Features
- 230-grain hard cast flat nose bullet for controlled expansion and penetration
- Hi-Tek Supercoat reduces barrel leading and fouling
- Subsonic velocity ideal for suppressors and reduced-noise applications
- Factory-consistent loads—no reloading required
- Suitable for both rifles and handguns
Specifications
| Caliber | 357 Magnum |
| Bullet Weight | 230 Grains |
| Bullet Type | Hard Cast Flat Nose |
| Bullet Coating | Hi-Tek Supercoat |
| Velocity | 1026 fps (from 16" barrel) |
| Energy | 538 ft-lbs |
| Overall Cartridge Length | 1.580" |
| Recommended Rifling Twist | 1:18 or faster |
| Package Quantity | 50 rounds (5 boxes of 10) |
Frequently Asked Questions
Will these subsonic 357 loads work in both rifles and handguns?
Yes. HSM designed this ammunition for use in both modern rifles and handguns chambered in 357 Magnum. Always verify your firearm's chamber and barrel specifications before loading.
What makes subsonic ammunition different?
Subsonic loads are designed to travel below the speed of sound (roughly 1125 fps in standard conditions), which reduces the supersonic crack that a bullet makes when it breaks the sound barrier. These 357 Mag rounds chrono at 1026 fps from a 16" barrel—ideal if you're running a suppressor or hunting where noise matters.
Can I use these in my suppressor?
Subsonic ammunition works well with suppressors because there's no supersonic crack to suppress. However, always consult your suppressor manufacturer's guidelines and ensure your firearm is compatible with both the ammunition and the suppressor you're using.
What's the hard cast bullet and Hi-Tek coating for?
Hard cast bullets are tougher than standard lead and resist deformation, especially at the velocities and pressures of handgun loads. They provide reliable penetration for hunting and reliable feeding. Hi-Tek Supercoat reduces barrel fouling and leading, keeping your bore cleaner longer—particularly useful in firearms that get heavy use.
