9mm vs 40 S&W Side by Side - Why America Chose These 2 Calibers
This video provides a technical comparison between the 9mm Luger and 40 Smith & Wesson calibers, detailing their origins, ballistic properties, and practical implications for law enforcement and civilian carriers. It highlights differences in bullet diameter, weight, velocity, energy, and recoil, explaining why these two calibers dominate the market.













