Hornady 6mm ARC – First Look

Published on June 3, 2020
Duration: 3:37

Tom Beckstrand of Guns & Ammo provides an expert first look at Hornady's 6mm ARC cartridge. He details its significance, including adoption by a notable DoD entity, and explains the cartridge's design improvements over the 6.5 Grendel, focusing on its VLD bullet compatibility and low chamber pressure for enhanced component life in AR-15 platforms. The 6mm ARC demonstrates impressive versatility, performing effectively from CQB distances to beyond 1000 yards.

Quick Summary

The Hornady 6mm ARC cartridge is notable for its adoption by the DoD prior to commercial release. Its design, based on a necked-down 6.5 Grendel case, optimizes for VLD bullets, offering high ballistic coefficients and excellent performance out to 1000+ yards. A key feature is its low 52,000 PSI chamber pressure, enhancing AR-15 component life.

Chapters

  1. 00:00Introduction & 6mm ARC
  2. 00:14DoD Adoption Significance
  3. 00:50Why DoD Chose 6mm ARC
  4. 01:246mm ARC Cartridge Design
  5. 01:57Ballistics & Velocity
  6. 02:30Low Chamber Pressure Benefit
  7. 03:05Versatility & Performance
  8. 03:25Conclusion & More Info

Frequently Asked Questions

What makes the 6mm ARC cartridge significant?

The 6mm ARC's significance stems from its adoption by a notable Department of Defense entity before its commercial release, indicating military-grade performance and utility. It offers a balance of range, energy, and manageable recoil for modern rifle platforms.

How does the 6mm ARC design improve upon the 6.5 Grendel?

The 6mm ARC features a necked-down case from the 6.5 Grendel with a slightly adjusted shoulder. This design is optimized for Very Low Drag (VLD) bullets, enhancing ballistic coefficients and performance, particularly in wind resistance and energy retention.

What are the key ballistic advantages of the 6mm ARC?

The 6mm ARC, especially with 108-grain VLD bullets, boasts high ballistic coefficients, allowing it to retain velocity and energy effectively. It remains supersonic past 1000 yards and offers excellent terminal effects out to 600-700 meters.

Why is the low chamber pressure of the 6mm ARC important?

The 6mm ARC operates at a maximum chamber pressure of 52,000 PSI. This lower pressure is crucial for ensuring the longevity of components in AR-15 type rifles, particularly the bolt face, which can be a failure point for higher-pressure cartridges.

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