Videos tagged with SDI School

The 6mm ARC cartridge offers a compelling balance of long-range performance and AR-15 compatibility, bridging the gap between 5.56 NATO and larger cartridges like 6.5 Creedmoor. It demonstrates excellent ballistic coefficient, retaining energy and resisting wind effectively out to 1,000 yards. Terminal ballistics show violent fragmentation and significant wound cavities, while accuracy remains sub-MOA with manageable recoil for rapid follow-up shots.

The True Velocity RM338 is an experimental .338 Norma Magnum machine gun designed to replace .50 caliber platforms, boasting significantly reduced recoil through advanced mitigation technology. It demonstrates impressive accuracy at long ranges (1300-1400 yards) and features an innovative one-handed quick-change barrel system. Ballistic testing confirms its potent terminal effects, capable of penetrating cover.

The MK18 Mod 0 is a legendary short-barreled rifle developed by NSWC Crane for US Naval Special Warfare, serving as a precursor to the Mod 1. It features a 10.3-inch barrel and is optimized for CQB and maritime operations, replacing the MP5 with a 5.56mm platform. Despite its short length, it demonstrates good controllability and can achieve accuracy at 300 meters with specific ammunition like Mk 262.

This video by Garand Thumb investigates the lethality of the .22 LR pistol, challenging common underestimations. Through ballistic testing on a realistic dummy, it demonstrates that while lacking raw power, precise shot placement, especially to the head and vital organs, can be devastating. Rapid fire is also shown to compensate for the caliber's lower individual round energy.

This video provides an in-depth review of the fictional Amban Disruptor Rifle, revealing it to be a custom-built, functional firearm based on a modified 1873 rifle action by Stockpile Defense. It details the rifle's lore, its fictional disruptor vs. blaster technology, and its real-world construction, including a stun device, rifled barrel with harmonic tuning, and advanced optics.

This video tests the effectiveness of suppressing a .50 caliber Barrett M107 rifle. While suppressors significantly reduce sound and muzzle flash, they notably increase felt recoil due to the removal of the rifle's integrated muzzle brake. The CGS suppressor is highlighted for its advanced design, offering impressive sound reduction even at long distances, though it can introduce cycling issues.

The Obrez, a heavily modified Mosin Nagant, is examined as a 'cursed' firearm. Historically used by partisans due to pistol scarcity, its short barrel drastically reduces the 7.62x54R's velocity to 1200-1500 fps, causing significant projectile instability and keyholing. Ballistics gel tests reveal erratic terminal performance, and massive muzzle flash indicates substantial energy loss, making it impractical compared to modern handguns.

This video details the fundamentals of RECCE (light reconnaissance) and essential gear for mountain operations. It covers situational awareness techniques like SLLS (Stop, Look, Listen, Smell), pack organization focusing on weight distribution, and a three-tier clothing layering system. Key gear recommendations include a modified boonie hat, a Mayflower chest rig with a medical kit, and full-grain leather boots with gaiters.

This video conducts a destructive test comparing the impact of .50 BMG and .500 S&W Magnum rounds on realistic human head ballistic analogs. It debunks the myth of shockwave lethality from near misses, demonstrating that direct impact is required for significant damage. The tests show that even grazing hits from these powerful calibers result in catastrophic destruction of the analog.

This video delves into the notorious 'Garand Thumb' phenomenon, explaining its mechanics and pain level through direct testing. It covers the M1 Garand's history, technical specifications, and proper loading techniques to avoid injury, including the 'bladed hand' method. The content also features novice testing and concludes with advice on training and firearm ownership.