338 ARC 307 GR SUB-X

Hornady Sub-X – 338 ARC 307 gr Subsonic

Silent Power. Subsonic Precision.

The 338 Advanced Rifle Cartridge (338 ARC) is quickly emerging as a versatile solution for hunters and shooters looking to maximize terminal energy from a compact platform. This subsonic loading — featuring the heavy 307 grain Hornady® Sub-X® (Subsonic eXpanding) projectile — brings quiet, hard-hitting performance to the table for suppressed rifles and close-range hunting applications.

Designed to expand reliably at low velocities, the Sub-X® bullet uses a unique core and polymer tip structure to deliver terminal performance even when traveling well below the speed of sound.

Specifications

• Cartridge: 338 Advanced Rifle Cartridge (338 ARC)

• Bullet: 307 gr Hornady® Sub-X® Polymer Tip

• Muzzle Velocity: 1,050 fps

• Muzzle Energy: 751 ft-lbs

• Bullet Type: Polymer Tip (Subsonic Expanding)

• Primer: Boxer

• Case: Brass (Reloadable)

• Lead-Free: No

• Corrosive: No

• Rounds per Box: 20

• Velocity Rating: Subsonic

• Recommended Use: Hunting / Suppressed Platforms

• Country of Origin: USA

Subsonic Application

This load is tuned for quiet operation in suppressed bolt-action or semi-auto rifles. Whether you're hunting hogs in thick cover or managing predators near populated areas, this round combines exceptional mass and controlled expansion to drop game cleanly with minimal sound signature.

• Optimized for suppression

• Reliable expansion at subsonic speeds

• Performs best in rifles with fast twist rates (1:8 or faster recommended)

• Excellent energy retention for short- to mid-range hunting scenarios

Legal Notice

• You must be 18 years or older to purchase rifle ammunition

• Always confirm your firearm is chambered in 338 ARC

• All ammunition sales are final

• Know and comply with your local and state laws before ordering

• ⚠️ Contains lead – use proper precautions when handling and shooting