O tamanho do barril faz diferença?

Ted from Line 45 discusses the evolving landscape of handgun calibers, highlighting how shooters are increasingly looking beyond 9mm for specific needs. The video explores 30 Super Carry for increased capacity in compacts, 5.7x28mm for flat trajectory and speed, 10mm for significant stopping power, 357 SIG for barrier penetration, and 22 TCM for rifle-like velocity in a pistol platform. The discussion emphasizes that while 9mm remains a standard, newer calibers offer solutions for specialized applications.

This guide outlines seven essential firearms for a zombie apocalypse scenario, emphasizing practicality, logistics, and reliability over aesthetics. The selections include a 16-inch AR-15 carbine in 5.56 NATO, a Glock 19 Gen 5 in 9mm, a 12-gauge pump shotgun, a .357 Magnum lever-action rifle, a .357 Magnum revolver, a 9mm PCC, and a suppressed .308 bolt-action rifle. Each choice is justified by its specific advantages in maneuverability, ammunition availability, shootability, and effectiveness in various survival situations.

This video explores the practicalities and perceived importance of having a handgun and rifle that share the same ammunition. While acknowledging the convenience factor, the presenter argues that it's often overrated and can lead to compromises in firearm selection, particularly for hunting or specialized roles. The discussion touches on historical contexts, modern applications, and potential scenarios like the apocalypse, ultimately suggesting that distinct calibers for handguns and rifles can be more advantageous.

This video provides practical advice for preparing for potential societal collapse, emphasizing firearm readiness and essential supplies. The speaker, a self-described regular guy with no formal credentials, stresses the importance of owning a reliable rifle like an AR-15, stocking ammunition, and mastering marksmanship fundamentals. He also covers critical survival items including medical supplies, food, water, and fuel, advocating for a 'stay put' strategy over bugging out.

This video from Banana Ballistics explores pushing the limits of .22LR velocity using modified ammunition, specifically nail gun blanks. The expert instructor demonstrates advanced testing techniques with various chronographs and firearms, highlighting extreme velocities and potential dangers. The content emphasizes safety and provides insights into the performance of different ammunition types and firearm durability under stress.

This video provides an expert-level analysis of the .45 ACP cartridge's effectiveness, comparing it to 9mm. It delves into the historical context of its design by John Browning, its ballistics, and its performance in modern contexts. The analysis debunks myths like 'knockdown power' and emphasizes that shot placement, penetration, and expansion are key factors, with modern ammunition narrowing the performance gap between calibers. The video concludes that .45 ACP remains a viable and effective cartridge, especially for suppressed use, but stresses that shooter skill and training are paramount.

This video explores the compatibility of a 50 BMG cartridge with a 12 gauge flare gun. The experiment reveals that while the cartridge fits, the flare gun's mechanism cannot ignite the tough 50 BMG primers. However, it successfully fires a standard 12 gauge blank, highlighting the difference in primer hardness. The content is presented from a hobbyist perspective, focusing on experimental curiosity rather than professional instruction.

This video from Tática Civil, featuring an expert instructor, explains the dangers of firing upwards due to projectile drop and terminal velocity. It demonstrates the safe use of 9mm shot shells for controlled demonstrations, highlighting the Canik Mete MC9 Prime with a Gideon Valor red dot sight. The instructor emphasizes crucial firearm safety protocols.

This guide details an experimental test to debunk the myth that a .50 BMG round passing near a target can be lethal. Using a ballistic mannequin, cardboard indicators, and a concrete backstop, the test demonstrates that a near miss from a .50 BMG round does not impart enough shockwave or air pressure to cause fatal injury, though the projectile itself possesses immense kinetic energy as evidenced by its impact on the concrete block. The test was conducted objectively by an individual with high authority, indicated by their empirical testing methods and proper safety protocols.

This video explores the surprising functionality of a realistic toy shotgun, the M870 by Dart Armory. The presenter tests if it can chamber and cycle real 12-gauge shotgun shells, comparing its operation to a Mossberg 590. The toy shotgun successfully loads, chambers, and ejects real shells, demonstrating a high degree of realism in its mechanical operation.