The Most LETHAL Handgun Round in America (It's Not 9mm)!

Everyone assumes the 9mm is the undisputed king of personal defense, but the numbers tell a much more complicated story. This video breaks down the FBI's wound-ballistics research, the 12-to-18-inch penetration standard, the difference between permanent and temporary cavities, and the historical events that shaped America's modern handgun caliber debate. From the Miami 1986 gunfight to the FBI's adoption of the 10mm, .40 S&W, and eventual return to 9mm, the evidence reveals why "stopping power" is far more complicated than caliber alone. We then compare published ballistic figures for the 10mm Auto, .357 Magnum, .44 Magnum, .30 Super Carry, and other common handgun cartridges, examining muzzle velocity, bullet weight, energy, pressure, penetration, and practical accuracy. The script ultimately separates two different questions: which cartridge produces the most muzzle energy, and which cartridge a shooter can actually place accurately under stress. According to the figures presented in this script, the 10mm Auto reaches 775 foot-pounds of muzzle energy, while the FBI's research emphasizes penetration and shot placement rather than a simple caliber-based ranking. #10mm #9mm #HandgunBallistics #FirearmsHistory #GunFacts