Twist Rate and Its Consequences

This video tests the firearms knowledge of two individuals through a 10-question trivia quiz, covering topics from fictional spy weaponry to historical military conflicts and technical firearm specifications. The quiz assesses understanding of pistol manufacturers, iconic revolvers, specific machine guns used in historical events, early polymer-framed firearms, rifling twist rates, shotgun gauges, ballistic measurements (MOA), NFA-regulated items, barrel terminology, shotgun chokes, and firearm design dates. The participants demonstrate an intermediate level of knowledge, with some questions proving more challenging than others.

This video explains the critical role of rifle twist rate in bullet stability and accuracy. It details how insufficient or excessive twist can negatively impact performance, leading to instability or even bullet disintegration. The discussion also covers the aerodynamic advantages and manufacturing inconsistencies of polymer-tipped bullets versus open-tip designs, emphasizing the importance of matching bullet weight and length to a rifle's twist rate, especially for handloaders.

This video compares the historical flintlock rifle with a modern .308 Winchester rifle, highlighting differences in projectile technology, loading procedures, and accuracy. It demonstrates the mechanics of flintlock ignition, the evolution of projectiles from round balls to modern bullets, and the impact of optics and rifling twist rates on accuracy. The comparison concludes that while flintlocks offer historical romance and surprising accuracy with iron sights, modern rifles with scopes provide superior precision and ease of use.

This video outlines five essential online resources for precision rifle enthusiasts. It details how to use the Applied Ballistics website's calculator for generating range cards, the Berger website's twist rate calculator for ensuring bullet stability, and Sniper's Hide for advanced ballistics data. Additionally, it highlights Storm Tactical for printable targets and Gun University for comprehensive firearm reviews with a unique grading system.

This video features Bryan Litz, a recognized expert in ballistics, explaining the critical concept of the transonic range in long-range shooting. He details how bullet performance becomes less predictable as it approaches and falls below the speed of sound (1340 ft/s), emphasizing the increased complexity of factors like drag and spin drift. Litz recommends his own extensive book series for those seeking to master these advanced ballistic principles for improved field accuracy.

This video tests 110-grain subsonic .223 ammunition, evaluating its terminal performance and reliability. The test reveals that while the ammunition is subsonic from a 16-inch barrel, it did not reliably cycle the action of the AR-15, requiring manual cycling. Terminal ballistics showed significant yawing and a total penetration of 19.5 inches in ballistic gelatin, with initial disruption around 3 inches. The presenter suggests limited practical application for typical users, comparing its niche utility to subsonic 300 Blackout.

This guide provides a step-by-step overview of field stripping the SKS rifle, a process essential for cleaning and maintenance. It covers the removal of major components like the dust cover, bolt carrier group, recoil spring, and gas tube. The information is presented with the authority of an experienced firearms instructor, emphasizing safe handling throughout the procedure.

This video provides an expert analysis of current ammunition supply chain issues, explaining how tariffs, geopolitical events, and material sourcing bottlenecks are driving up costs. The speaker, Boondock Ballistician, details the impact of Section 232 tariffs on steel and copper, propellant production shifts, and the nitrocellulose supply chain. It also highlights how increased demand can spur new primer manufacturers to enter the market.

The Boondock Ballistician reviews the PSA H&R 635, a 9mm PCC inspired by the Colt 635. While praising its comfortable ergonomics, minimal recoil, and clean aesthetics (lacking a forward assist), the reviewer encountered significant reliability issues, primarily attributed to straight-profile Uzi-style magazines. These issues included failure to feed and extract, and difficulty seating full magazines. The video also touches on the historical context of the design, its direct blowback operation, and the utility of the A1 carry handle for optics mounting.

This video provides an in-depth review of the Lee Enfield rifle, highlighting its historical significance and operational advantages. The presenter argues it may be the best bolt-action rifle for its use-case perspective, praising its smooth bolt operation, short bolt throw, and 60-degree bolt lift. It details the rifle's adoption by the British Army, its .303 British caliber, and the use of charger clips and detachable magazines, noting James Paris Lee's invention of the latter. The video also touches on its accuracy potential, including its use for volley fire and anti-aircraft roles, and discusses various historical markings and model variations.