Videos tagged with Twist Rate

This video debunks the myth that solid copper bullets require extremely high velocities for effective hunting performance. Through ballistics gel testing and analysis of 7 PRC loads using Barnes TTSX and LRX bullets, Gavin Gear demonstrates excellent expansion and weight retention across a wide velocity range, including lower velocities equivalent to longer ranges. The testing highlights the versatility and effectiveness of modern monolithic copper projectiles for various hunting scenarios and legal requirements.

This video investigates an accuracy problem with a Browning XBolt 2 in 6.5 PRC, identifying a 1:7 twist rate as a potential cause for keyholing and poor performance with certain ammunition. The investigation involved testing the twist rate, examining the barrel, and consulting with ammunition manufacturers. The conclusion suggests a combination of an overly fast twist rate and ammunition construction issues led to the observed problems.

This guide, presented by Josh from AT3 Tactical, explains the fundamental concepts of AR-15 barrel rifling and twist rates. It details historical methods, modern manufacturing processes like button rifling, cut rifling, and cold hammer forging, and clarifies how twist rate impacts bullet stability based on weight. The information is presented with an emphasis on practical application for firearm owners.

This video provides an expert-level explanation of Ballistic Coefficient (BC) from a seasoned firearms instructor. It details how BC affects bullet trajectory and wind drift, emphasizing its importance for long-range accuracy (500-1000 yards). The instructor also covers factors influencing BC like bullet mass and shape, and discusses the critical interplay between BC, bullet weight, and rifle twist rate, cautioning against manufacturers overstating BC values.

This video details the development of a compact, folding rifle project, codenamed 'ATF'. The team discusses the selection of the 6mm ARC cartridge for short barrels, load optimization, custom bolt work, and the engineering challenges of integrating a folding stock. The project emphasizes rapid prototyping and iterative design, drawing on extensive experience to create a highly compact and capable firearm system.

This video delves into the complexities of ballistics, particularly terminal ballistics, explaining the numerous variables that influence projectile behavior upon impact. The speaker, a former sniper and Green Beret, emphasizes that while internal and external ballistics can be calculated, terminal ballistics are inherently unpredictable due to factors like impact angle, tissue density, projectile spin rate, and engineering. The discussion highlights how modern ammunition engineering, including tumbling and frangible rounds, significantly impacts terminal performance, and stresses the importance of understanding these variables for accurate analysis.

This video provides a detailed ballistic comparison between the 6.5 PRC and the 270 Winchester, highlighting their performance differences in penetration, terminal ballistics, and long-range accuracy. The presenter, an experienced firearms instructor, demonstrates that while the cartridges are ballistically similar in many aspects, the 6.5 PRC's modern design and ability to stabilize high-BC bullets offer a slight advantage in extended range performance.

This video details the intricate process of manufacturing precision rifle barrels, emphasizing the critical role of dimensional control and material stress management. It highlights how specific operations like drilling, reaming, and buttoning, combined with meticulous inspection and proprietary tooling, contribute to exceptional barrel quality and shooter performance. The expertise of seasoned technicians and years of accumulated knowledge are presented as essential for achieving tight tolerances and consistent results.

This video explores the 8.6 Blackout cartridge, highlighting its impressive performance through milk jugs, comparable to a 50 BMG. The discussion covers its development from 6.5 Creedmoor and .308 cases, the use of monolithic copper bullets designed for expansion, and its suitability for both gas guns (AR-10 platform) and bolt actions. The cartridge is praised for its enjoyable, low recoil impulse, making it ideal for extended range sessions and effective for hunting applications like hog hunting.

This video investigates whether the new DPMS Kitty Kat is a faithful reproduction of the original, comparing external and internal features. The presenter examines barrel length, handguard style, and receiver types, referencing historical DPMS catalogs to determine the existence of an original A1 Kitty Cat model. Key differences in barrel length, handguard construction, and internal specifications like feed ramps and twist rates are highlighted.

This video from GUNBROS explains the concept of firearm twist rate, its importance for projectile stabilization, and provides historical context comparing smoothbore muskets to rifled rifles. The speaker, demonstrating high authority, details how twist rate affects heavier or longer projectiles and contrasts the effectiveness of the Brown Bess with the American Kentucky Rifle.