Cloning Mk262 - pt 7 - 8208 XBR and AR-Comp

This video details an attempt to clone Mk262 ammunition using Winchester 748 and Winchester 760 powders with 77-grain Sierra MatchKing bullets. The instructor, with experience in this series, tests various powder charges, meticulously recording velocity, group sizes, and pressure signs. While Winchester 748 proved ineffective for accuracy, Winchester 760 showed significant promise, particularly at lower charge weights, warranting further investigation.

This video details a reloading and ballistics test of 223 Remington ammunition featuring 53gr and 55gr Hornady V-Max bullets. The instructor, Johnny, meticulously loads and tests various powder charges with IMR 3031, IMR 8208 XBR, and Power Pro Varmint, providing detailed velocity and group size data. The test highlights the performance differences between the two bullet weights and the impact of different powders on accuracy and consistency, offering insights for handloaders seeking optimal performance.

This video details the reloading process for the .223 Remington cartridge using 65gr Cutting Edge MTH bullets, IMR 8208 XBR, and Hodgdon Varget powders. The instructor emphasizes the unique 'seal tight band' design of the bullet, its impact on seating depth, and the importance of proper case neck preparation to maintain tension. Accuracy testing reveals significant variability, with specific loads showing promise for future development and ballistic gel testing.

This video details load development for the 6.5 Grendel using 129gr Nosler AccuBond bullets, focusing on AR-Comp and IMR 8208 XBR powders. The instructor, with experience in reloading and precision shooting, aims to find a final load for an upcoming hog hunt. The testing involves 10-shot groups to assess accuracy and consistency, with a final load selection based on performance and velocity.

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.