Testing PMC X-Tac M855: 8 Chrome-Lined Barrels, 30-Shot Groups

Published on December 26, 2025
Duration: 22:03

This video presents a comprehensive, data-driven shootout comparing eight different chrome-lined AR-15 barrels using PMC X-Tac M855 62gr Green Tip ammunition. Instructor Preston Moore meticulously details his testing methodology, employing advanced tools like the Garmin Xero C1 Pro chronograph and Ballistic-X software to analyze 30-shot groups at 100 yards. The results highlight significant variations in accuracy and velocity between barrels, introducing the 'A-ZED' metric for practical group size evaluation.

Quick Summary

Preston Moore conducted a rigorous shootout testing PMC X-Tac M855 62gr Green Tip ammunition across eight chrome-lined AR-15 barrels. Using tools like the Garmin Xero C1 Pro and Ballistic-X, he analyzed 30-shot groups at 100 yards, introducing the A-ZED metric for practical accuracy evaluation.

Chapters

  1. 00:00Introduction: PMC X-Tac M855 Barrel Shootout
  2. 00:34Barrel Lineup and Build Specifications
  3. 01:01Shooting Setup and Methodology
  4. 02:15BCM BFH ELW 14.5" Barrel Testing Results
  5. 03:39Understanding the A-ZED Score Metric
  6. 05:25Daniel Defense and FN Barrel Performance
  7. 08:26Geissele and Hodge Defense Barrel Results
  8. 11:57LMT Piston and Noveske Barrel Testing
  9. 16:05Red Right Hand and Krieger Barrel Performance
  10. 18:54Final Velocity and Accuracy Leaderboard

Frequently Asked Questions

What is the A-ZED score in firearms testing?

The A-ZED (A-Zone Equivalence Distance) metric calculates the maximum distance where a 30-shot group, based on 4x mean radius, would still fit within a USPSA lower A-zone. It provides a practical context for group size and consistency.

How did different AR-15 barrels perform with PMC X-Tac M855 ammunition?

In a test of eight chrome-lined barrels, the LMT 12" Piston and Krieger 16" stainless barrels showed the best accuracy, while Daniel Defense and Red Right Hand barrels struggled most with this specific M855 load.

What tools were used to test PMC X-Tac M855 ammunition accuracy?

The test utilized a Garmin Xero C1 Pro chronograph for muzzle velocity, a Mantis X10 Elite for stability tracking, and the Ballistic-X app for precise measurement and analysis of 30-shot groups at 100 yards.

What is the rated velocity for PMC X-Tac M855 ammunition?

PMC X-Tac M855 62gr Green Tip ammunition is rated for a velocity of 2920 FPS when fired from a 16-inch barrel and 3100 FPS from a 20-inch barrel.

Related News

All News →

More Training & Techniques Videos You Might Like

More from Preston Moore

View all →