Hornady 6mm ARC 103gr ELD-X Ammunition

Specifications (Tested with a 24-inch Hornady test barrel)

Muzzle Velocity: 2,800 fps
Muzzle Energy: 1,793 ft-lbs (1,038 ft-lbs @ 400 yards)
Ballistic Coefficient: .512 (G1) / .258 (G7)
Recommended Twist Rate: 1:8" minimum for optimal stabilization
Quantity: 20 cartridges per box
Hornady Item Number: 81602

Product Overview

Originally tested, selected, and fielded by a specialized unit within the U.S. Department of Defense for its multipurpose combat rifle program, the 6mm ARC (Advanced Rifle Cartridge) is designed to outperform both larger and smaller cartridges within the AR-15 platform.

This versatile cartridge utilizes high-efficiency, high-BC bullets to deliver exceptional precision, energy retention, and terminal performance. Commercially available 6mm ARC offerings cater to various applications, including hunting, match shooting, and personal protection.

Designed for both AR-15 platforms and short/micro-action bolt guns, the 6mm ARC provides an optimal balance of power, weight, and recoil management, making it an excellent choice for defensive, competitive, hunting, and tactical applications.

Key Features

✅ Unmatched Performance in AR-15 Platforms – Delivers exceptional velocity, accuracy, and energy retentionwhile maintaining manageable recoil.
✅ High-BC Bullet Selection – Efficient bullet design ensures superior aerodynamics, extending effective range and minimizing wind drift.
✅ Optimized for Various Applications – Ideal for match shooting, hunting, military, and law enforcement use.
✅ Balanced Cartridge & Propellant Design – Enhances barrel life while providing reliable all-range performance.
✅ Versatile Compatibility – Functions effectively in both AR-15 and bolt-action rifles.

Ballistician’s Notes (Wade Chandler)

The 103gr ELD-X has performed well on whitetail and hog-sized game.
While effective for long-range plinking, it exhibits slight temperature sensitivity.
Users may experience noticeable blowback when using traditional suppressors.
Best suited for longer gas systems for optimal cycling and consistency.
Performs well in 1:7 and 1:7.5 twist rate barrels, though Hornady recommends a 1:8" twist minimum.

Chronographed Velocity Data

Testing was conducted across multiple barrel lengths, with average velocities derived from three separate tests per length.

12.5" Barrel – 2,340 fps (15 FPS SD)
14.5" Barrel – 2,495 fps (6 FPS SD)
16" Barrel – 2,600 fps (12 FPS SD)
18" Barrel – 2,600 fps (15 FPS SD)
20" Barrel – 2,675 fps (10 FPS SD)

Testing Parameters

Temperature: 70°F
Humidity: 30%
Elevation: 2,500 ft
Each rifle underwent proper break-in procedures before testing.
Velocity tests were conducted at a consistent barrel temperature of 70°F.
Users are encouraged to verify their own velocity data using a chronograph for precise ballistic calculations.

Why Choose Hornady 6mm ARC 103gr ELD-X?

The 6mm ARC redefines performance within the AR-15 platform, bridging the gap between powerful long-range cartridges and lightweight, efficient rounds. Whether you're a hunter, competitor, tactical shooter, or military professional, the 6mm ARC 103gr ELD-X provides unparalleled accuracy, energy retention, and versatility.

Shoot with confidence—Hornady delivers performance when it matters most.