Making accurate loads ~ Understanding powders, Part II

This guide details how to test propellant temperature sensitivity, a crucial factor for consistent long-range accuracy. It emphasizes using a reliable chronograph and testing ammunition across a wide temperature range, from cold to hot conditions. The process involves calculating the muzzle velocity change per degree Fahrenheit to understand how temperature fluctuations affect performance, enabling shooters to account for these variations in their ballistic solutions.

This video demonstrates the significant impact of primer choice on reloading results. By switching from Remington Gold primers to Federal 210 primers, the presenter observed a notable increase in average velocity and a decrease in standard deviation, even with identical other load components. The test highlights how primer selection can affect accuracy and point of impact.

This video from GUNBROS features an experienced speaker who argues that reloading ammunition is generally not cost-effective for most shooters, especially for common calibers like 9mm and .223 FMJ used for range shooting. He explains that mass production by companies like PMC, Magtech, and S&B offers unbeatable prices due to economies of scale. Reloading is presented as a viable option only for specialized needs such as wildcat cartridges or custom hunting rounds where precision and unique specifications are paramount.

This video from InRangeTV explains why the 44-40 cartridge is generally not recommended for modern firearms enthusiasts, despite its historical significance. The instructor, with apparent expertise in firearms, details the practical disadvantages of 44-40, including ammunition scarcity and reloading difficulties, compared to more accessible modern alternatives like 357 Magnum/38 Special or 45 Colt. The core argument centers on the 44-40's historical advantage in sealing black powder fouling due to its stepped case design, a benefit largely negated by modern ammunition and firearm designs.

This video demonstrates the process of testing a handloaded 10mm cartridge featuring a 165gr Sig V-Crown JHP bullet and 9.0 grains of Hodgdon Longshot powder. An experienced handloader uses a Caldwell chronograph to measure velocities and calculate muzzle energy from two different barrel lengths (3.78" Glock 29 and 5" 1911), providing objective ballistic data.

This video features competitive shooter Lena Miculek attempting various internet-famous shooting challenges. She demonstrates techniques for drills like the 'Fast Drill' and 'Bill Drill,' emphasizing accuracy and speed. The content highlights the difficulty of these challenges, even for experienced shooters, and showcases different firearm types from competition pistols to pocket-sized concealed carry options.

This guide, drawing on decades of experience, details how to achieve rifle accuracy. It covers defining accuracy standards, understanding MOA, troubleshooting mechanical issues like loose sights and barrel contact, and optimizing bedding and muzzle conditions. The instruction emphasizes practical application for hunters and marksmen, highlighting that modern accuracy benchmarks have evolved significantly.

This guide provides expert-level instructions for disassembling, cleaning, and maintaining the Ruger 10-22 Walnut Sporter, drawing on detailed insights from GunBlue490. It emphasizes critical steps like safely removing the action from the stock to protect the walnut finish and proper cleaning techniques to ensure long-term reliability. The instruction highlights the importance of using appropriate tools and avoiding common mistakes like over-oiling the wood stock.

This video provides a detailed guide on disassembling and cleaning a Smith & Wesson Model 25 revolver, presented by a factory-trained armorer. It emphasizes proper nomenclature, tool usage, and careful handling of internal parts to avoid damage. The guide covers removing stocks, yoke, side plate, hammer, rebound slide, and trigger, with specific instructions on reassembly and common pitfalls to avoid, such as altering trigger pull components or damaging delicate parts.

This guide, presented by an expert with over 30 years of experience and U.S. Army background, details proper firearm lubrication. It emphasizes using synthetic/CLP oils sparingly, applying only a microscopic film to prevent attracting debris. The expert recommends a silicone-treated rag for regular wipe-downs and advises against over-oiling, especially in extreme environmental conditions.