Hornady Subsonic .338 ARC 307gr Sub-X 20rd Box

Hornady Subsonic ammunition in .338 ARC loads a heavy 307-grain Sub-X bullet designed for consistent performance at subsonic velocities. This offering is configured in a 20-round box with brass cases and is suitable for target and match use as well as suppressed and unsuppressed platforms. Powders and primers are selected for repeatability to support accuracy-focused shooting.

Key Specifications

• The cartridge is .338 ARC.
• The bullet weight is 307 grains.
• The bullet type is JACKETED HOLLOW POINT.
• Muzzle velocity is 1050 fps.
• Muzzle energy is 752 ft lbs.
• Rounds per box is 20 rounds.
• Boxes per case is 10.
• Case material is Brass.
• Reloadable: Yes.
• Product line is Sub-X.

Built with Hornady's Sub-X bullet construction and premium components, this ammunition emphasizes consistency and reliable performance at subsonic speeds. The 20-round box format and reloadable brass cases make it a practical choice for precision-oriented range sessions and suppressed-platform testing where predictable, subsonic ballistics matter.