Barrel Harmonics Testing - Part 1

This video concludes a series on barrel harmonics testing, focusing on the 6.5 Grendel. The instructor tests various muzzle devices, including brakes, flash hiders, and a tuner brake, to observe their impact on group size. While results were unpredictable and often contrary to previous tests on a 6.5 Creedmoor, the series demonstrated that muzzle devices significantly affect firearm accuracy, with dead weight potentially offering a damping effect. The instructor expresses a desire for future testing with flat-based bullets and acknowledges the complexity of gas effects.

This video explores the impact of muzzle device weight on firearm accuracy. The instructor tests various weighted 'lumps' and a suppressor on three different rifle platforms (6.5 Grendel AR-15, 223 Wylde AR-15, and 6.5 Creedmoor Thompson Center Compass). Results indicate that added weight can significantly tighten groups, though the effect is gun-dependent and the exact mechanism (weight vs. gas effects) remains complex.

This guide details a practical test to demonstrate how the AR-15's gas block and tube assembly can affect barrel harmonics and accuracy. The VSO Gun Channel host, an expert firearms instructor, walks through firing groups with the gas system intact, removed, and reinstalled, using subsonic .300 Blackout ammunition to amplify potential accuracy differences. The results highlight that even components designed to be free-floated may not achieve true free-float status due to the gas system's interaction with the barrel.

This video details a reloading and ballistics test of the .223 Remington cartridge using 77gr Berger OTM Tactical bullets and Vihtavuori N540 powder. The instructor, with apparent expertise in reloading and ballistics, conducts a suppressed versus unsuppressed shooting comparison to gather data for barrel harmonics testing. The experiment involves meticulous load development across various powder charges and careful observation of group sizes and velocities.

This expert guide details how to test the impact of a suppressor on rifle accuracy. It covers methodology for 100 and 200-yard tests, emphasizing the importance of observing point of impact shifts and maintaining group sizes. The instruction highlights that while suppressors may not inherently increase accuracy, they significantly improve the shooting experience by reducing recoil and noise, though re-zeroing is often necessary.

This guide details the proper procedure for zeroing a rifle for combat engagements. It emphasizes correct optic mounting, grouping to confirm fundamentals, understanding bullet drop compensators, and choosing between a 25-meter or 50-meter zero based on expected engagement distances. The instructor stresses the importance of confirming the zero at range and avoiding common mistakes like resting the barrel on supports.

This guide details a successful method for removing a stuck cartridge case from a firearm barrel using hydraulic pressure generated by a high-pressure grease gun. The technique, demonstrated by Johnny's Reloading Bench, involves a custom adapter and motor oil to hydraulically force the case out. The video highlights the importance of proper tools and high pressure, showcasing a successful extraction that saved a valuable Krieger barrel.

Instruction from a firearms enthusiast and reloader on preparing and sizing 300 Winchester Magnum brass. The video details the challenges of reloading for this caliber, including the long throat of the Thompson Center Compass rifle and the importance of proper neck tension and shoulder bumping. It covers selecting collets, setting up sizing dies, using specialized tools for case maintenance, and determining optimal seating depths for accuracy.

This video provides an in-depth review and performance test of the Vortex Diamondback Tactical 6-24x50 rifle scope, presented by Johnny, an experienced gear reviewer. The review covers technical specifications, a practical tracking test (box test) at 100 yards, and optical quality comparisons with other Vortex models. Johnny highlights the scope's First Focal Plane (FFP) reticle and its value proposition for its price point, while also noting limitations in optical clarity compared to higher-end models.

This video provides a comprehensive guide to reloading .22-250 Remington ammunition, focusing on a Remington Model 788 with a Douglas barrel. It details component selection (brass, bullets, primers, powders), case preparation, powder charging, bullet seating, and initial range testing. The instructor emphasizes accuracy and velocity, aiming to develop loads suitable for varmint and deer hunting, while also highlighting potential challenges with certain components and the firearm's specific characteristics.