6mm ARC 103gr ELD-X Ballistics Gel Test & Hunting Performance
6mm ARC 103gr ELD-X Ballistics Gel Test & Hunting Performance
Caliber: 6MM ARC | Barrel Length: 22” | Test Distance: 100 & 370 Yards
Bullet: 103gr Hornady ELD-X (.512 B.C.) | Muzzle Velocity: 2,698 FPS | Muzzle Energy: 1,665 FT/LB
Temperature: 66 ℉ | Humidity: 55% | Barometric Pressure: 29.8 inHg | Altitude 1,000 FT
Does the 103gr ELD-X Still Perform at 370 Yards? | 6MM ARC Ballistic Gel Test
In this post, we evaluate the Hornady ELD-X in a 6MM ARC AR-15 platform to examine real-world terminal ballistics at two practical hunting distances: 100 yards and 370 yards. Using calibrated 10% ballistic gel from Clear Ballistics, this test analyzes expansion, penetration depth, retained bullet weight, and energy transfer to see how the ELD-X performs at both short and extended ranges.
Our Testing Methodology
We didn’t just pick distances at random. We wanted to see how the terminal ballistics shifted between a standard “woods” shot and a “stretched” long-range shot:
100 Yards (2,524 FPS | 1,457 FT/LB): This represents the range at which the vast majority of hunters take their shots. We wanted to check for jacket-core separation or excessive fragmentation at higher impact velocities.
370 Yards (2,088 FPS | 997 FT/LB): This is the “threshold.” Based on our ballistics calculations, this is where the bullet drops to roughly 1,000 ft-lb of energy. Since this has become the popular “yardstick” for the ethical taking of medium game, we wanted to see if the bullet actually performs when the energy starts to bleed off.
Below, you’ll find our full breakdown—including high-speed gel GIFs and terminal performance photos—to see if the 103gr ELD-X is the right choice for your next hunt.
100-Yard Benchmark: High-Velocity Terminal Performance
Wound Cavity and Weight Retention Results
At 100 yards, our goal was to observe how the ELD-X projectile manages high-impact stress. The results showcased a perfect balance of expansion, penetration, and energy transferer
- Wound Dynamics: Expansion began almost immediately, opening up around 2 inches into the gel and maintaining a large, destructive wound cavity out to roughly the 11-inch mark.
- Expansion: The bullet we recovered measured 0.565 inches in diameter, expanding to approximately 2.33x its original size while still maintaining excellent structural integrity.
- Weight Retention: Despite Hornady’s conservative estimate of 50–60% weight retention, our recovered bullet weighed in at 79.8 grains (77%). That’s not bad at all.
The Verdict at 100 Yards: With 19 inches of penetration, strong retained weight, and 2.33x expansion, the 103 gr Hornady ELD-X delivered outstanding terminal performance at 100 yards. The combination of a large wound cavity, controlled expansion, and deep penetration suggests this load would perform exceptionally well for medium-sized game hunting applications.
370-Yard Threshold: Testing the 1,000 ft-lb Energy Mark
Performance at the Ethical Limit for Medium Game
At 370 yards, the 6MM ARC begins entering the range where impact velocity and retained energy become much more important for reliable terminal performance. Our goal with this test was to see whether the 103gr Hornady ELD-X could still deliver dependable expansion, penetration, and energy transferer at these lower velocities and energy levels.
Wound Dynamics: Even at the lower impact velocity, we saw the bullet expanded very consistently, beginning to open around the 2-inch mark in the gel. The wound cavity stayed wide and effective through approximately 9.5 inches before gradually narrowing as the bullet continued penetrating.
Expansion: The recovered bullet still demonstrated impressive mushrooming at extended range, expanding to 0.495 inches in diameter — approximately 2.04x its original size. Even with the lower impact velocity at 370 yards, we saw the ELD-X expand reliably while retaining excellent structural integrity and deep penetration.
Weight Retention: The recovered bullet retained an impressive 89.6 grains of its original weight, resulting in outstanding 87% weight retention — far exceeding Hornady’s advertised 50–60% retention range for the Hornady ELD-X.
The Verdict at 370 Yards: With over 20 inches of penetration and nearly 90% weight retention, the 103gr ELD-X proves it is far more than a “close-range” projectile. The consistency we saw in expansion and the deep-driving penetration confirm that this load remains a lethal, ethical choice for medium game at significant distances.
Summary: Does the 103gr ELD-X Still Perform at 370 Yards?
Comparing the 100-yard benchmark to the 370-yard threshold reveals a level of consistency often not achieved but many bullets. While velocity and energy naturally dissipate over distance, the 103gr ELD-X managed to maintain a nearly identical performance profile at both ranges.
| Performance Metric | 100 Yards (High Velocity) | 370 Yards (Energy Threshold) |
| Expansion Diameter | 0.565″ (2.33x) | 0.495″ (2.04x) |
| Weight Retention | 77% (79.8gr) | 87% (89.6gr) |
| Max Cavity Depth | 11 Inches | 9.5 Inches |
| Total Penetration | 19 Inches | 20+ Inches |
The Big Question: Does the 6mm ARC 103gr ELD-X Perform at 370 Yards?
Absolutely. At 370 yards, (1,000 ft-lb energy threshold) the ELD-X didn’t behave in a borderline fashion—it excelled and still expanded to over twice its original diameter. Because the bullet behaves almost exactly the same way at 370 yards as it does at 100, you don’t have to wonder what it’s going to do when it hits. If you’re looking for a 6mm ARC hunting load that balances match-grade accuracy with dead-reliable terminal performance, the 103gr ELD-X is a clear winner.
