13.9" 6mm ARC Velocity

Published on March 28, 2026
Duration: 2:07

This video presents ballistics data for a 13.9-inch 6mm ARC rifle. The test fired 105-grain ammunition through a suppressor, achieving an average muzzle velocity of 2494.9 feet per second with a low standard deviation of 10.2. The data indicates excellent performance for factory ammunition out of this barrel length.

Quick Summary

A 13.9-inch 6mm ARC rifle with 105-grain ammunition achieved an average muzzle velocity of 2494.9 feet per second. The test recorded a low standard deviation of 10.2 fps and an average kinetic energy of 1451 ft-lbs, demonstrating excellent performance for factory loads from this barrel length.

Frequently Asked Questions

What is the average muzzle velocity for a 13.9-inch 6mm ARC barrel with 105-grain ammunition?

In this test, a 13.9-inch 6mm ARC rifle with 105-grain ammunition achieved an average muzzle velocity of 2494.9 feet per second. The velocity spread was 30.1 fps, with a standard deviation of 10.2 fps.

What kinetic energy and power factor can be expected from a 13.9-inch 6mm ARC rifle?

The 13.9-inch 6mm ARC rifle, using 105-grain ammunition, produced an average kinetic energy of 1451 foot-pounds. The average Power Factor (PF) was recorded at 262, indicating good performance for factory loads.

How does barrel length affect 6mm ARC performance?

This video demonstrates that a 13.9-inch barrel can achieve significant velocities for the 6mm ARC cartridge, averaging 2494.9 fps with 105-grain rounds. This suggests that shorter barrels can still offer effective performance for this caliber.

What are the key components of the 6mm ARC rifle tested?

The tested rifle featured an A5 upper receiver, an A2 lower receiver, and a 13.9-inch Ultra Match barrel chambered in 6mm ARC. It also incorporated a Sprinco green spring and a traditional suppressor.

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