Hornady Subsonic 338 ARC 307gr Sub-X Rifle Ammo
Hornady's 338 ARC subsonic load features a 307-grain Sub-X bullet engineered for reliable expansion at low velocities. Ideal for suppressed rifles, target shooting, and precision applications.
Hornady Subsonic 338 ARC Ammunition
Hornady's Subsonic line represents a thoughtful approach to below-the-sound-barrier shooting. This 338 ARC load pairs a heavy 307-grain Sub-X bullet with carefully selected powders and primers to deliver consistent, accurate performance at subsonic velocities.
Sub-X Bullet Design
The Sub-X bullet is purpose-built for low-velocity expansion:
- Flex Tip insert within the hollowpoint cavity promotes reliable expansion below 1,100 feet per second
- Long grooves in the gilding metal jacket work with the bullet's flat profile to ensure consistent mushrooming
- Lead core provides weight and controlled deformation
- Cannelure for positive case crimp, ensuring reliable feeding in semi-automatic rifles
Performance Characteristics
This ammunition delivers approximately 1,050 feet per second from typical rifle barrels—well below the sound barrier. The combination of heavy bullet weight and subsonic velocity makes it particularly effective for:
- Suppressed rifle shooting
- Target and match applications
- Hunting scenarios where noise signature matters
- Training and practice
Quality and Consistency
Each round is assembled with high-quality cartridge cases and primers, meeting Hornady's rigorous ballistic standards. You can expect the accuracy and reliability that has made Hornady a trusted name among serious shooters.
20 rounds per box
Features
- 338 arc cartridge with 307 gr sub-x bullet
- designed for subsonic performance with controlled expansion
- features flex tip for improved expansion at low velocities
- gilding metal jacket with flat profile for reliable expansion
- optimized powders for consistent lot-to-lot performance
- reduced noise and flash, ideal for suppressed and unsuppressed use
- built to meet fbi protocol ballistic test requirements
- suitable for target and match applications
- velocity at muzzle: 1050 fps
- energy: 752 ft-lb
- sectional density: .384
- ballistic coefficient: .375 (g1)
- box contains 20 rounds
- 307 grain sub-x bullet
- 1050 fps muzzle velocity
- 752 ft/lb of energy
- 338 arc
- rounds per box: 20
