I Loaded The World's Fastest Bullet

This guide details the technical modifications involved in the Colt MARS PDW project, a miniaturized M4 variant chambered in a unique 5.56x30mm cartridge. It highlights the extensive part alterations, including receivers and internal components, and explains the rationale behind Colt's decision to shelve the project. The revival by Centurion Arms is also noted. Instruction is provided by Chris Bartocci, a recognized expert on the AR-15/M16 platform.

This video from Brownells' reloading series features Caleb and Steve demonstrating how to reform 6.8 SPC brass into the 25 GPC wildcat cartridge. The tutorial covers essential steps like sizing the brass to reduce the neck diameter, trimming it to the correct length of 1.620 inches for bullet crimping, and final case preparation including chamfering and deburring. They utilize Hornady dies, Imperial Sizing Wax, and Sinclair case trimmers. The video also briefly touches upon other brass conversions like 300 BLK and .32 Special, and promises future content on load development for the 25 GPC.

This video is the 12th installment in a series focused on "cloning" Mk262 ammunition. The goal is to achieve accuracy and high velocity for the 77gr Sierra Match King bullet when loaded in .223 Remington cartridges. The video discusses using Winchester 748 and 760 powders in this process. The description notes that links were removed in September 2018 to comply with YouTube policies.

This guide details the modification process for converting an FNX-45 pistol to fire the .460 Rowland cartridge, as demonstrated by an expert firearms instructor. Key steps involve reaming the barrel, upgrading recoil and magazine springs, and installing a compensator to handle the significantly increased pressure and slide velocity. The instructor emphasizes that polymer frames are better suited for this high-pressure round due to their flex.

This entry details the custom revolver work of John Linebaugh, focusing on his powerful .500 and .475 Linebaugh cartridges and their development. It highlights the technical features engineered for extreme recoil management, such as custom cylinders and sights, and discusses their application in big game hunting. The legacy of Linebaugh's pistolsmithing is also touched upon, noting his son's continuation of the craft.

This video provides an expert-level comparison between the .44 Magnum and .50 Action Express calibers, featuring a Magnum Research Desert Eagle and a Ruger Super Redhawk. The host, demonstrating high authority, conducts a series of tests including penetration through lumber, steel, sand, and concrete, followed by ballistic gel testing with hollow-point rounds. The analysis highlights differences in muzzle energy, penetration, and wound channel, ultimately questioning the cost-to-performance ratio of the .50 AE.

This video provides an in-depth, experimental comparison between .223 Remington and 5.56x45mm NATO cartridges, utilizing a chronograph and various barrier materials. The host, demonstrating high expertise through empirical testing, reveals significant performance differences, particularly in barrier penetration, with 5.56x45mm NATO generally outperforming .223 Remington.

This video from Banana Ballistics explores the surprising lethality of "less lethal" shotgun ammunition. Through rigorous testing with ballistic gel and plywood, the host demonstrates that rounds like bean bags and high-velocity .410 rubber buckshot can cause significant damage, challenging the common perception of these rounds as entirely non-lethal. The testing highlights the importance of understanding ammunition performance beyond its intended classification.

This video provides an objective comparison of 9mm Luger, .40 S&W, and .45 ACP calibers through a series of rigorous tests including lumber, sand, concrete, and ballistics gel. The host, leveraging specialized equipment like a Garmin Xero C1 Pro chronograph and digital calipers, presents data on velocity, penetration, and expansion. While .40 S&W showed competitive performance in some tests, the analysis concludes with a preference for 9mm due to its higher capacity and lower recoil, highlighting the importance of practical considerations beyond raw ballistics.