How big of a difference between 9mm and 10mm bullet?

This video discusses the historical shift in firearm caliber preferences, particularly the move from .45 ACP and .40 S&W towards 9mm. It emphasizes that shot placement and shooter skill are paramount, regardless of caliber. The discussion also delves into the process of customizing firearms, differentiating between essential needs and desirable wants, and considering factors like trigger pull, sights, and ergonomics.

This video from Regular Guy Training LLC features an expert instructor discussing the nuances of firearm reliability, particularly comparing Glock models to the Beretta 92. The instructor, with extensive experience shooting thousands of rounds through Glocks, emphasizes that while Glock has an edge in reliability under adverse conditions due to fewer moving parts, the comparison is often "splitting hairs" for critical defense, teaching, and match applications. The discussion highlights the importance of understanding stoppage frequency and clearance times for effective training.

This video from Regular Guy Training LLC demonstrates advanced pistol handling and tactical shooting techniques. The instructor, an experienced shooter, showcases drills involving the Beretta 92 and a Glock-style pistol, including prone shooting, reloads, and shooting from a vehicle. It also features a rifle-to-pistol transition drill, highlighting the use of modern accessories like red dot optics and weapon lights.

Joel Park, an experienced firearms instructor, guides viewers on selecting the right pistol by emphasizing the importance of physical fit and natural pointability. Key aspects include assessing grip comfort for both hands, evaluating trigger characteristics for a predictable break, and ensuring controls like the slide stop do not impede a proper hold. This instructional approach helps shooters find a firearm that aligns with their individual ergonomics.

This video demonstrates the operation of the HK VP70, a historic polymer pistol. It covers loading the firearm with 9mm ammunition and engaging steel targets at a shooting range. The footage highlights the 'Made in Germany' markings and chambered caliber.

This video demonstrates fundamental pistol shooting techniques from various common positions, including standing, kneeling, and prone. The reviewer, an experienced shooter, showcases transitions between these positions, shooting on the move, and effective target engagement. The session emphasizes accuracy and controlled fire, even during dynamic scenarios.

This video demonstrates the ballistic resistance of an excavator bucket against various firearm calibers, from .22 LR to .50 BMG API. The test, conducted by an experienced individual, shows that while smaller calibers cause minimal damage, larger rounds like the .50 BMG API can penetrate the bucket. The footage provides visual evidence of impact effects and the destructive potential of different ammunition types.

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 from Yee Yee Life features an experienced host testing the ballistic penetration of various calibers, from .22 LR to .50 BMG, in an Intex swimming pool. The host demonstrates proper firearm safety and provides detailed measurements of bullet penetration depths, offering unique insights into how different rounds interact with water as a medium. The results highlight significant variations in penetration based on caliber and velocity.

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.