Centurion Arms Midweight CHF/CL Barrel - Groups and Evaluation

This video provides an in-depth review of a BCM Standard ELW (Enhanced Lightweight) 16-inch barrel, examining its construction and performance with various ammunition types. The analysis includes detailed measurements of barrel specifications, observations on machining quality, and extensive 100-yard group testing with Federal Gold Medal 77gr SMK, AAC 77gr OTM, and PMC X-TEC 62gr MA55. The presenter, Preston Moore, offers insights into how barrel construction and ammunition choice affect accuracy and velocity, comparing the button-rifled ELW to cold hammer-forged variants.

This review of the Sons of Liberty Gun Works M4 L89 AR-15 highlights its performance as a mid-tier duty rifle. The reviewer, who built this specific rifle at a Sons of Liberty armorer's course, praises its ergonomics, the quality of its components like the Liberty two-stage trigger, and its accuracy, achieving sub-MOA groups with certain ammunition. The rifle demonstrated excellent reliability over 500 rounds, feeding and ejecting flawlessly with various magazines and ammunition types. The review concludes that the L89 offers significant value, comparing favorably to higher-priced competitors, and is a strong option for those looking to buy or build a reliable and accurate AR-15.

This video provides a detailed review and performance test of a Sons of Liberty Gunworks (SOLGW) 13.9-inch Cold Hammer Forged Combat V2 barrel. The reviewer, Preston Moore, assesses the barrel's physical characteristics, including its construction from 4150 chrome moly vanadium steel, QPQ treatment, and gas system dimensions. He then conducts live-fire accuracy tests with three different ammunition types, documenting group sizes and velocities. The findings indicate that while the barrel exhibits good initial build quality, its accuracy performance was below expectations compared to other barrels tested under similar conditions.

Preston Moore provides a comprehensive, data-driven review of the Seekins Precision 16" AR-15 barrel, utilizing his proprietary A-ZED scoring system. The review details rigorous testing methodology, including 30-shot groups and borescope analysis, offering high-authority insights into barrel performance, material quality, and potential gas system considerations. This expert assessment is valuable for AR-15 builders and enthusiasts seeking objective performance data.

This review of the Knight's Armament KS-1 rifle details its performance with various ammunition types. The rifle features a 13.7-inch cold hammer-forged 4132 chromoly vanadium barrel with a 5.56 NATO chamber and a 1:7 twist rate. Testing involved 30-shot groups at 100 yards to assess accuracy and heat effects, with results varying significantly by ammunition, indicating potential compatibility issues.

This video details accuracy testing of the Meridian Defense AK-101 after 1500 rounds, focusing on the impact of barrel seasoning, muzzle devices, and suppressors. The instructor, with extensive experience, found no significant accuracy improvement from barrel break-in. Notably, the factory muzzle device appeared to degrade accuracy, while suppressor use dramatically tightened groups, suggesting harmonics play a crucial role. The AK-101 was configured as an AK-74M clone.

Preston Moore, demonstrating high expertise, provides an analytical assessment of a Criterion CORE series barrel after 15,000 rounds. He details significant internal wear, including throat erosion and fire cracking, using specialized tools like borescopes and erosion gauges. Despite the degradation, the barrel still produced surprisingly acceptable groups with specific ammunition, highlighting its durability and the importance of testing worn components.

This video provides an in-depth review and accuracy test of a Ballistic Advantage AR-15 barrel. The presenter, Preston Moore, details the barrel's specifications, including its Hensley profile, 16-inch length, mid-length gas system, and 1:7 twist rate. He conducts extensive live-fire testing with four different ammunition types at 100 yards, meticulously recording group sizes, velocities, and rifle stability scores using advanced equipment. The results are compared against Ballistic Advantage's sub-MOA guarantee, offering practical insights into the barrel's real-world performance.

This video provides an in-depth accuracy test of the Sons of Liberty Gunworks 16-inch SPR barrel, featuring unique polygonal rifling and a 5/8x24 thread pitch. The instructor conducts 30-shot groups with various ammunition types, meticulously recording data on velocity, rifle stability, and group size using advanced metrics like the A-ZED score. The results demonstrate exceptional accuracy, positioning the barrel favorably against competitors.

This video provides a detailed comparison of two BCM ELW (Extreme Lightweight) barrels, examining their manufacturing consistency and on-range performance. The presenter conducts thorough bench inspections, including gauging, weighing, and borescope analysis, highlighting potential manufacturing variations. Live-fire testing involves 30-shot groups at 100 yards with various ammunition types to assess accuracy, velocity, and consistency, offering insights into the practical performance of these lightweight barrels.