Videos tagged with Barrel Inspection

This comprehensive review by Preston Moore, an expert firearms instructor, details the inspection and rigorous 30-shot accuracy testing of a Colt 6520 16" pencil barrel. The analysis includes detailed measurements, bore inspection, and comparative performance data with Federal Gold Medal 77gr Sierra MatchKing, PMC X-Tac M855, and ADI World Class 69gr Sierra MatchKing ammunition, providing valuable insights for AR-15 enthusiasts.

This review provides an in-depth look at the Green Mountain 12.7" AR-15 barrel, including detailed borescope analysis and accuracy testing with various ammunition types. The expert assessment highlights potential issues with gas port size and machining, while also evaluating the barrel's performance for its price point. It's recommended for those seeking a budget-friendly option for general use or 'blasting'.

This expert review by Preston Moore details a comprehensive inspection and ballistic testing of the LMT 12.5" DI barrel in 5.56 NATO. The analysis includes borescope examination of the bore, chamber, and rifling, alongside detailed group testing with various ammunition types. The instructor highlights performance metrics like muzzle velocity and A-ZED scores, offering valuable insights for firearm enthusiasts and builders considering this barrel.

This guide details a rigorous inspection and testing procedure for AR-15 barrels, as demonstrated by Preston Moore. It covers essential physical gauging, advanced borescope analysis to detect internal defects like pitting, and a structured approach to range testing with various ammunition types. The process emphasizes data collection for accuracy and velocity, highlighting the importance of thorough evaluation before and after live fire. Moore's objective and analytical approach provides high-level insights into barrel quality.

This video provides an in-depth evaluation of a 20-inch Red Right Hand LMG HBAR AR-15 barrel manufactured by Rosco. The instructor meticulously inspects the barrel's physical characteristics, including dimensions, weight, and bore condition using a borescope. He then conducts extensive live-fire testing with multiple ammunition types, collecting detailed data on velocity, group size, and shooter stability. The evaluation highlights potential quality control issues, such as chrome failure and bore imperfections, while also assessing the barrel's performance in a simulated LMG role.

This video provides an in-depth inspection and performance evaluation of the LMT 14.5" piston-driven barrel. The reviewer details manufacturing variations across three samples, including extractor reinforcement and feed ramp cuts. Extensive gauging and borescope inspections reveal issues like chrome flaking and throat abrasion in some units. Shooting results with various ammunition types demonstrate accuracy potential, with one barrel performing respectably while others showed defects.

This video provides a detailed evaluation of a Black River Tactical (BRT) Optimum 14.5-inch Cold Hammer Forged Chrome Lined barrel. The reviewer conducts a thorough inspection, including borescope analysis, dimensional checks, and headspace testing. Shooting tests with various ammunition types reveal significant issues with chrome flaking and inconsistent accuracy, leading to a negative assessment of this specific barrel's quality and durability. The reviewer also details the extensive process of attempting to resolve the issue with BRT, highlighting poor customer service.

This guide details the comprehensive inspection and testing process for an AR-15 barrel, as demonstrated by Preston Moore. It covers essential bench inspections using specialized gauges and micrometers, followed by detailed borescope analysis of the bore and chamber. The guide emphasizes a rigorous 30-shot group testing methodology to evaluate accuracy under simulated match conditions, utilizing proprietary metrics like the A-ZED score for objective benchmarking. This approach provides high-confidence data for discerning barrel performance.

This video provides a comprehensive overview of various smartphone applications beneficial for shooters, ranging from advanced ballistic calculators to tools for measuring shot groups and checking concealed carry laws. The instructor emphasizes the importance of familiarizing oneself with these apps to improve shooting accuracy and efficiency. Key recommendations include AB Quantum, Hornady, Kestrel Link Ballistics, Windy, and Range Buddy for their utility in data analysis and environmental assessment.

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.

This video highlights a Wilson Combat barrel with an exceptionally rough chamber, described as having deep grooves. The instructor emphasizes that such imperfections can lead to extraction problems, especially in gas-operated firearms, as the casing expands into these grooves. He advises inspecting barrels for similar issues and removing them from service if found, recommending replacement with a barrel featuring a smoother chamber for improved reliability.

This discussion focuses on evaluating used rifles, particularly the Marlin 336 in .30-30, and the importance of inspecting the barrel for wear. Participants discuss methods like the cartridge test to assess rifling integrity and the potential for counterboring or wear at the muzzle and chamber. They also touch upon the value of older JM-stamped Marlins and the general condition of rifles post-pandemic.