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










