6mm AR

Published on July 22, 2019
Duration: 22:37

This review details the 6mm AR cartridge, a necked-down 6.5 Grendel designed for AR-15 platforms. It offers excellent ballistic performance and accuracy, rivaling .243 Winchester in a small-frame AR. The build features a 22-inch X-Caliber barrel and high-end components, demonstrating sub-MOA accuracy at 500 yards and consistent hits at 750 yards.

Quick Summary

The 6mm AR is a custom cartridge, essentially a necked-down 6.5 Grendel case for .243 projectiles, offering high ballistic coefficient and flat shooting. It achieves sub-MOA accuracy at 500 yards and retains 1000 ft-lbs of energy at that range.

Chapters

  1. 00:00Introduction to 6mm AR & Initial Accuracy Test
  2. 01:146mm AR Cartridge Technical Basics & Bullet Options
  3. 02:21History, Ballistic Performance & Energy at 500 Yards
  4. 04:36Custom Rifle Build Specifications & Components
  5. 08:03Essential Accessories: Brass Recovery & PRS Use
  6. 10:31Long Range Testing at 750 Yards & Conclusion

Frequently Asked Questions

What is the 6mm AR cartridge?

The 6mm AR is a custom cartridge based on a necked-down 6.5 Grendel case, designed to fire .243 diameter projectiles. It offers excellent ballistic performance and accuracy within the AR-15 platform, suitable for handloaders.

How accurate is the 6mm AR?

The 6mm AR demonstrates impressive accuracy, achieving sub-MOA groups (around 4 inches at 500 yards) with 105-grain bullets. It's designed for flat shooting and high ballistic coefficient performance.

What are the key components of the reviewed 6mm AR rifle build?

The build features a 22-inch X-Caliber 1:8 twist barrel, RMS2 Hopai K suppressor, Superlative Arms adjustable gas block, Geissele trigger and charging handle, and a Leupold LRP VX-3i 6.5-20x optic.

What is the effective range and energy of the 6mm AR?

With a 105-grain bullet at 2711 fps, the 6mm AR retains approximately 1000 ft-lbs of energy at 500 yards, rivaling .243 Winchester performance in a small-frame AR-15.

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