Firearm Basics: Cartridge Case Material

This "Guniversity" video, "AMMO 102 - Parts of a Cartridge," aims to educate new firearm owners by breaking down the fundamental components of a cartridge and explaining their functions. The video emphasizes the importance of understanding these basics, even for experienced individuals, to better explain them to newcomers. It's part of a series designed to provide foundational knowledge in a clear and accessible manner.

This video explores the 20x138mm belted cartridge case, originally German WWII ordnance used in Flak 30/38 guns. It details how the US captured and tested this ammunition, eventually producing their own '20MM T1' test rounds in 1941 via the Worcester Stamped Metal Company.

Pinfire cartridges were a crucial transitional technology due to limitations in early industrial brass drawing capabilities, predating efficient production of modern metallic cases. Casimir Lefaucheux patented the system in 1835, leveraging existing percussion hammer mechanisms. Eugene Lefaucheux later industrialized it in the 1850s, coinciding with advancements in brass metallurgy and case drawing.

The hourglass effect in 9x21mm cartridges is an aesthetic defect caused by excessive case tightening relative to the bullet. While visually unappealing, it typically doesn't impact function. However, attempting to eliminate it by reducing radial neck tension can lead to bullet setback during cycling, potentially causing firearm malfunctions like failures to chamber.

This video from Brownells aims to educate new and experienced firearm enthusiasts on fundamental cartridge terminology. Firearm Support Technician Caleb Savant breaks down the components of a loaded cartridge, including the bullet, case, primer, and powder. He explains different bullet types like boattail and flat base, and describes the ogive. The video details various case varieties such as straight-wall and bottleneck, and further categorizes cases by their rim type: rimmed, non-rimmed, recessed-rimmed, and belted. Headspace is also explained in relation to how different case types interact with the firearm's chamber. The content is geared towards improving understanding for those new to firearms or those seeking clarification on these technical terms.

Samuel Pauly's 1812 invention of the self-contained cartridge revolutionized firearms by introducing a brass-based, paper-cased round with a fulminate primer. This system offered significant advantages over muzzleloaders, including faster loading, easier cleaning, and consistent power. Pauly's workshop also fostered innovation, influencing key figures like Nikolaus von Dreyse and Casimir Lefaucheux, who developed groundbreaking firearm technologies.

This video details the meticulous process of ammunition manufacturing at Hornady's facility in Grand Island, Nebraska. It covers the creation of bullets, starting with copper cups and lead cores, and the production of brass cartridge cases through annealing and hammering. The content also highlights Hornady's rigorous quality control testing on a 100-yard range and the final packaging stages, emphasizing their commitment to American-made quality.

The L1A1 SLR, a British variant of the FN FAL, was adopted by the UK military for its semi-automatic-only operation and inch-pattern components. It served through major conflicts like the Falklands War and was eventually replaced by the L85 bullpup. The rifle is known for its robust design and reliability, though original British-made examples are now rare.

This video documents a startling bobcat attack on a turkey hunter. The hunter's calls, intended for turkeys, attracted a bobcat which stalked and then pounced. The hunter's reaction caused the bobcat to retreat, highlighting the unpredictable nature of wildlife encounters and the importance of situational awareness.

Vista Outdoor has acquired the iconic Remington Ammunition brand, aiming to revive its manufacturing operations in Lonoke, Arkansas. The acquisition follows Remington's 2020 bankruptcy, with Vista Outdoor integrating the brand alongside Federal, CCI, and Speer. The focus is on restoring quality, securing raw materials, and re-employing skilled workers to meet high market demand for popular lines like Core-Lokt and UMC.