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Hornady Subsonic Brass .338 ARC 307 Grain 20 Rnd SubX
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$39.99
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SKU: 82272-090255822724
Overview
Built for suppressed shooting, this .338 ARC load is centered around Hornady’s SubX design and a 307-grain bullet intended to perform at subsonic velocities. It is suited to hunters and shooters using modern firearms configured for subsonic loads, where reliable cycling and consistent function matter. The brass casing adds a durable cartridge foundation for use in a range of shooting conditions. Packaged 20 rounds per box, it offers a focused option for those looking for a subsonic hunting or range load in .338 ARC.
Why Hunters Choose the Hornady
Subx Technology
Is designed for subsonic use,
307-grain Sub-x
Bullet is stated to expand
Brass Casing
Is described as robust for
Designed Cycle
In modern firearms made for
20-round Box
Practical quantity for range or
Key Features
- Hornady SubX technology is designed for subsonic velocities and suppressed firearms.
- 338 ARC cartridge with a 307-grain Sub-X bullet.
- Bullet is described as expanding reliably at lower speeds.
- Brass casing is listed for reliability and durability.
- Box contains 20 rounds.
- Listed muzzle velocity is 1050 fps with 752 ft-lbs of muzzle energy.
Best Used For
- Suppressed firearm users seeking a .338 ARC subsonic load for compatible rifles
- Hunters wanting a 307-grain Sub-X round designed for lower-velocity expansion
- Shooters building a 20-round supply for subsonic range sessions or field use
- Owners of modern firearms designed to cycle subsonic loads reliably
- Users prioritizing brass-cased ammunition in a .338 ARC cartridge
Specifications
| Bullet Type | Sub-X |
|---|---|
| Bullet Weight | 307 gr |
| Caliber | 338 ARC |
| Casing Material | Brass |
| Muzzle Energy | 752 ft-lbs |
| Muzzle Velocity | 1050 fps |
| Rounds Per Box | 20 |
Pros
- SubX technology is designed for subsonic use, including suppressed firearms.
- 307-grain Sub-X bullet is stated to expand reliably at lower speeds.
- Brass casing is described as robust for reliability and durability.
- Designed to cycle in modern firearms made for subsonic loads.
- 20-round box provides a practical quantity for range or field use.
Considerations & Trade-offs
- This load is built around subsonic use, so it is intended for firearms and setups that are compatible with subsonic ammunition.
- The 307-grain bullet and 1050 fps muzzle velocity reflect a specialized performance profile rather than a general-purpose .338 ARC option.
- The box contains 20 rounds, which may be a consideration for shooters who want a larger quantity per purchase.
- It is described as suitable for suppressed firearms, so its use case is more specific than standard-velocity ammunition.
Suggested Comparisons
- Subsonic rifle ammunition
- Suppressed shooting ammunition
- .338 ARC cartridges
- Hunting ammunition
Suggested Accessories
- Suppressor
- Ammunition storage box
- Hearing protection
- Cleaning kit
Frequently Asked Questions
What caliber is this Hornady Subsonic load?
This is a .338 ARC cartridge.
How many rounds come in a box?
Each box contains 20 rounds.
What bullet type and weight does it use?
It uses a Sub-X bullet weighing 307 grains.
What muzzle velocity and energy are listed for this load?
The listed muzzle velocity is 1050 fps and the listed muzzle energy is 752 ft-lbs.
Is this load intended for suppressed firearms?
Yes. The product description says Hornady SubX technology is designed for subsonic velocities and is ideal for suppressed firearms.