.223 Rem - 77gr Sierra Match King with Varmint and N140

Sully from Line 45 outlines seven essential calibers for gun owners to stockpile in anticipation of future ammunition shortages, emphasizing their specific roles and the current market conditions. The video highlights the importance of proactive stocking for calibers like 300 Blackout, 308 Winchester, 10mm Auto, 12 Gauge, 22 LR, 223 Remington/5.56 NATO, and 9mm Luger, detailing their performance characteristics and availability challenges.

This video clarifies the differences between .223 Remington and 5.56 NATO ammunition, primarily focusing on chamber pressure and chamber dimensions. It emphasizes that while similar, 5.56 NATO operates at higher pressures (around 58,000 PSI) compared to .223 Remington (around 55,000 PSI). The instructors strongly advise against firing 5.56 NATO in a rifle specifically chambered for .223 Remington due to potential catastrophic failure, while noting that .223 Remington is generally safe to fire in 5.56 NATO chambers.

This video provides an in-depth analysis of the 69-grain Sierra Match King (SMK) projectile in 5.56 NATO, presented by an experienced shooter. The instructor details its performance across various barrel lengths and twist rates, comparing it to 77-grain alternatives. Key discussions include ballistics, wind compensation, logistical considerations for ammunition, and practical application in shooting scenarios. The content emphasizes understanding bullet drop, velocity retention, and energy transfer for effective long-range engagement.

This video conducts a penetration test comparing M855 green tip and M193 5.56 NATO ammunition using a POF 415 Edge rifle. It also includes chronograph data for both rounds. The test reveals surprising results regarding penetration depth and velocity differences, offering insights into the performance characteristics of these common 5.56 NATO loads.

This video from Line 45 provides a comprehensive overview of 10 calibers experiencing significant price drops in 2025, making them ideal for stocking up. Instructor Ted highlights specific price points, availability, and recommended retailers for calibers like 9mm Luger, 5.56 NATO, .22 LR, and more. The advice focuses on leveraging current market conditions for cost-effective training and practice.

This video analyzes the cost-effectiveness of reloading ammunition in 2026, focusing on common calibers like 9mm, .223/5.56, and larger calibers such as .300 Win Mag. It details the costs of components (primers, powder, brass, bullets) and compares them to factory ammunition prices. The analysis highlights that reloading is only cost-effective for those shooting a significant volume of rounds annually (at least 1,000 per year) and who can reuse brass multiple times, with a break-even point typically occurring after 3 years for common calibers and 2 years for larger calibers, assuming initial equipment costs are already covered.

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.