Groups & Velocities from 6 AR-15 Barrels: AAC 77gr OTM Review

This comprehensive review tests ADI World Class 69gr Sierra MatchKing ammunition across nine different AR-15 barrels. The analysis employs a rigorous methodology, including 30-shot groups at 100 yards and advanced data collection tools, to evaluate accuracy and velocity. The Seekins 16" barrel emerged as the top performer, demonstrating the potential of budget-friendly match ammunition when paired with the right barrel.

Preston Moore conducted a comprehensive test of PMC X-Tac M855 62gr ammunition across eight different chrome-lined AR-15 barrels. The test focused on 30-shot groups at 100 yards, measuring both velocity and accuracy using advanced tools like the Garmin Xero C1 Pro and Ballistic-X app. Moore's 'A-ZED' metric provided practical accuracy insights, revealing that LMT, Krieger, and Noveske barrels generally performed best with this specific ammunition load, while Daniel Defense and Red Right Hand barrels showed less favorable results.

This review provides an in-depth analysis of the Seekins Precision 16" AR-15 barrel, including detailed technical specifications, physical inspection, and performance testing. The barrel features a .223 Wylde chamber, 1:8 twist, and mid-length gas system. Testing involved 30-shot groups at 100 yards using various ammunition types, with results evaluated using the 'A-ZED' scoring system. The review highlights the barrel's construction and performance characteristics.

This review of the Mosin Nagant rifle highlights its historical significance and unique design features, contrasting them with modern firearms. While acknowledging its 'ugly' aesthetic and some ergonomic drawbacks like a steel butt plate and non-scopable bolt, the video demonstrates its surprisingly functional action and the effectiveness of its bayonet. The analysis includes velocity tests of different ammunition types and a comparison to a modern .308 Winchester rifle, offering insights into its performance and historical context.

This AT3 Tactical video seeks community input for their AR-15 barrels guide, specifically focusing on the optimal barrel length. The instructor, demonstrating expertise through a multi-episode series, encourages viewers to share their opinions and justifications for the 'absolute best' barrel length. This interactive approach aims to gather diverse perspectives for an upcoming episode.

This comprehensive ballistic gel test evaluates the Winchester Defender .40 S&W 165-grain bonded JHP ammunition. The review, conducted by an experienced firearms instructor, details velocity, penetration, and expansion characteristics across different Glock barrel lengths (3.5" and 4.5"). The results demonstrate excellent performance, with the bonded projectile maintaining integrity and achieving significant expansion and penetration through a heavy clothing barrier.

This extensive 15,000-round test reveals the surprising longevity of a Criterion CORE series AR-15 barrel. Despite significant internal wear, including fire cracking and erosion, the barrel maintained respectable accuracy, particularly with 77gr handloads. The test highlights how barrel degradation impacts ammunition sensitivity and emphasizes the importance of rigorous testing methodologies.

This YouTube video thoroughly tests the accuracy of a Ballistic Advantage AR-15 barrel, specifically evaluating if it lives up to its Sub-MOA guarantee. The creator shoots 30-shot groups with four different types of ammunition, analyzing the results to see if they meet the manufacturer's criteria. The video includes a detailed look at the barrel's specifications, a borescope inspection, the range setup, and a comparison of different ammunition performance, concluding with an overall results analysis and leaderboard. The central question is whether the barrel performs as expected for a Sub-MOA rated component.

This video offers an in-depth analysis and accuracy test of the 16-inch Sons of Liberty Gun Works SPR Barrel. It covers the barrel's unique features like its .223 Wylde chamber, 1:7 twist rate, 3-groove polygonal rifling, and 5/8x24 threads. The review includes a borescope inspection of the internal quality, micrometer measurements of external dimensions, and a detailed shooting assessment with three 30-shot groups using different ammunition types (PMC Bronze 55gr, Hornady 73gr ELD Match, Berger 77gr OTM). The analysis focuses on mean radius, group size, velocity, standard deviation, and shooter-induced flyers. A new metric, A-ZED (A-Zone Equivalence Distance), is introduced to practically assess rifle performance at range. The video provides data-driven insights into the barrel's precision and performance.

This video features a head-to-head comparison of two BCM BFH ELW (Enhanced Lightweight) AR-15 barrels. The creator conducts thorough inspections, including borescoping and headspace checks, revealing some unexpected findings. The testing involves shooting 30-shot groups at 100 yards with three different ammunition types: Winchester 55gr M193 FMJ, Frontier 68gr BTHP, and Federal Gold Medal 77gr SMK. Data is collected using a Garmin Zero C1 Pro chronograph and a Mantis X10 Elite, with results analyzed using mean radius and a custom A-ZED scoring system. The video aims to determine the consistency and real-world accuracy of these specific barrel models and whether any bore anomalies correlate with performance.