Videos tagged with Borescope Inspection

This expert-level review by Preston Moore details a comprehensive test of the LMT 12.5" Direct Impingement barrel. The analysis includes a thorough borescope inspection revealing minor imperfections in the chrome lining and throat, alongside detailed ballistic testing with three different ammunition types. The data provides valuable insights into the barrel's accuracy, velocity, and overall performance compared to other models.

This comprehensive review details the performance of a custom Krieger AR-15 barrel, finished by RPM Rifle Works. The barrel, featuring a 1:7 twist and intermediate gas system, was tested with various match and bulk ammunition. Expert analysis includes detailed borescope inspections, group size measurements, and velocity data, highlighting its exceptional accuracy potential with premium loads.

This review details the Centurion Arms 14.5-inch RECCE barrel, including technical specifications, bench and borescope inspections, and extensive 30-shot group testing. Preston Moore, demonstrating high expertise, found bore and rifling defects but noted improvements after warranty work on the crown, providing detailed performance data for various ammunition types.

Preston Moore, demonstrating high expertise, evaluates five Kaiju Rifle Co. Chimera AR-15 barrels from Bad Attitude Department. Despite initial promising specs (16"/12.5", 5.56 NATO, 1:7 twist, 416R stainless steel), borescope inspection revealed severe internal pitting due to improper media blasting. Range testing confirmed poor accuracy (2.4-4.5 MOA) despite high muzzle velocities, with one load completely missing the target. Bad Attitude Department acknowledged the defect, issued refunds, and removed the product.

This review by Preston Moore details the Unrivaled Technologies 16.69" AR-15 barrel, featuring a chrome-lined, hand-lapped bore and aggressive fluting. Rigorous bench inspection and 30-shot range testing using the A-ZED scoring system demonstrate its high performance, ranking it as the top-performing chrome-lined barrel tested to date and rivaling premium stainless steel options. The barrel is optimized for reliability with a rifle-length gas system and a .107" gas port for adjustable blocks.

This expert-level analysis by Preston Moore rigorously tests two Daniel Defense 16-inch cold hammer forged lightweight AR-15 barrels. Through detailed bench measurements, borescope inspections, and 30-shot group range testing with various ammunition, the video assesses barrel consistency and accuracy. The findings highlight Daniel Defense's commitment to quality manufacturing, with minor variations observed between samples, particularly in accuracy with different loads.

This video features a comprehensive review and test of a 16-inch White Oak Armament SPR barrel after 4,000 rounds. The analysis includes bench inspection with a borescope, throat erosion gauging, and measurements of the gas block journal and barrel extension. Despite minor issues, the barrel is then tested on the range with three different ammunition types (Hornady 73gr ELD-Match, AAC 62gr FMJ, AAC 77gr SMK) for 30-shot groups at 100 yards. Shot tracking is done with a chronograph and Mantis X10, with group measurements using the Ballistic-X App. The review utilizes the A-ZED metric to assess practical accuracy against a USPSA A-zone, ultimately placing the barrel second on the creator's leaderboard.

This video features an in-depth review and accuracy test of the Palmetto State Armory JAKL-10 chambered in .308 Winchester. The reviewer performs a borescope inspection, uncovering a rough chamber and a blemish on the crown, and analyzes the impact of these defects on accuracy. The video details a shooting setup using 30-shot groups at 100 yards with four types of ammunition (PMC Bronze 147gr FMJ, AAC 168gr Sierra MatchKing, AAC 175gr Sierra MatchKing, and PMC X-TAC Match 168gr OTM), measuring mean radius, group size, velocity, standard deviation, and shooter-induced flyers using the Mantis X-10. A new A-ZED metric is introduced to assess practical long-range performance. The review also includes a comparison to a 5.56 SPR using the Applied Ballistics WEZ tool.

This video provides a review of a 16" Midlength nitride barrel from Anderson Manufacturing with a 5.56 NATO chamber and a 1/7 twist. The reviewer covers the barrel's features, conducts a borescope inspection of its interior, and then takes it to the range for accuracy testing. Three 30-shot groups were fired with different ammunition types to evaluate the barrel's performance. The reviewer expresses that while they didn't expect exceptional accuracy, the results were lower than anticipated.

This expert guide details a comprehensive 'barrel autopsy' procedure, as demonstrated by the School of the American Rifle. It covers essential checks including thread concentricity, material identification, magnetic properties of the extension, erosion gauging, bore straightness, gas port alignment, and headspace verification using specialized gauges. A critical borescope inspection revealed a manufacturing defect: a smoothbore barrel lacking rifling, highlighting the importance of thorough inspection regardless of brand or price due to potential quality control lapses.

This guide details how to effectively remove and prevent barrel corrosion on an AR-15. It emphasizes using a borescope for inspection, Evapo-Rust for rust removal, and specialized bore cleaners for post-soak cleaning. The expert instruction highlights the importance of proper cleaning and the application of protectants to maintain barrel integrity.

This video showcases Teslong workbench borescopes and features a shop cat named Rebel. The description details how to download the Android application for the Teslong borescope, emphasizing that it's an APK download and not available on the Google Play Store. Users will need to allow untrusted application installations and may require an APK installer. The find is credited to Josh Money.