How Many Legos Does it Take to Stop a Bullet?

This video features Mr. Madness conducting an ice penetration test comparing seven different calibers from .22LR to suppressed 5.56 NATO. The test visually demonstrates the significant increase in penetration power and ice displacement as caliber increases, with the 5.56 NATO round creating the largest crater. The host provides a clear, comparative analysis of each caliber's impact.

This video analyzes the popularity of the nine-millimeter (9mm) caliber, arguing that its widespread adoption might be overrated. The content likely delves into the pros and cons of 9mm ammunition and firearms chambered in this caliber, potentially comparing it to other options and questioning its suitability for various applications.

This YouTube video delves into the capabilities of the .45 ACP caliber, challenging common perceptions and offering a factual analysis of its performance. The description highlights that the video will address outdated myths and present modern statistics for this iconic "fight-stopper," suggesting a comparison with the popular 9mm. The content appears geared towards educating firearm enthusiasts about the .45 ACP's effectiveness and history, particularly for those familiar with or favoring the 9mm cartridge.

This expert-level review from Line45 delves into the most powerful and deadly calibers for revolvers. It provides detailed ballistic data, historical context, and practical applications for cartridges like the .357 Magnum, .44 Magnum, .480 Ruger, .454 Casull, and the exceptionally potent .500 S&W Magnum. The analysis highlights their effectiveness for hunting, self-defense against large game, and their respective recoil management considerations.

This AT3 Tactical video seeks community input for their AR-15 barrels guide, specifically focusing on the optimal barrel length. The instructor, demonstrating expertise through a multi-episode series, encourages viewers to share their opinions and justifications for the 'absolute best' barrel length. This interactive approach aims to gather diverse perspectives for an upcoming episode.

This video from Guns Blazing Ranch provides a direct comparison between 5.56mm M193 and M855 'green tip' ammunition. Demonstrations show the significant difference in penetration power against a cinder block, with M855 exhibiting superior destructive capability. The content highlights practical differences relevant to firearm enthusiasts.

This video tests the ballistic resistance of an excavator bucket against various calibers, from .22 LR to .50 BMG API. While smaller calibers and even .450 Bushmaster and .308 were stopped, the .50 caliber Armor Piercing Incendiary round successfully penetrated the bucket, destroying a dummy target behind it. The test highlights the significant difference in terminal effects between standard rifle rounds and specialized armor-piercing ammunition.

This video tests the penetration capabilities of various calibers against a large pine tree, culminating with a .50 BMG API round. Surprisingly, even powerful rifle rounds like 5.56mm and 7.62mm, as well as handgun rounds like 10mm and .44 Magnum, failed to fully penetrate the tree. The .50 BMG API round, while charring the entry point, also did not exit the back of the tree, demonstrating the significant stopping power of a substantial tree trunk.

This video tests the penetration capabilities of various firearms rounds in a swimming pool, from .22 LR to .50 BMG. Surprisingly, higher velocity rifle rounds like the .223 and .308 fragmented quickly, while the .50 AE Desert Eagle traveled the furthest at 190 inches. The .50 BMG sniper rifle, despite its power, only penetrated 61 inches, likely due to massive energy displacement.

This video tests the ballistic resistance of a Secret Service Suburban window against various calibers, from .22 LR to .50 BMG. While smaller calibers and even a 10mm and .44 Magnum were stopped with varying degrees of damage, the window was eventually penetrated by a .50 BMG sniper rifle round. The testing provides a clear demonstration of the limits of armored vehicle glass against high-powered rifle threats.