The 9mm vs 45 ACP argument has been going on for more than a century. We take a deep dive into this debate, testing each cartridge a number of different ways.
357 Magnum/9mm: 100-Yard Performance Test - The Shooter's Log
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9mm vs .45 ACP, Why People Argue About It
9mm vs .45 ACP - Difference and Comparison
9mm vs. .45 ACP - Caliber Comparison - The Broad Side
Pistol caliber comparison's 9mm, .40S&W, 10mm, .357 Sig, .45ACP etc
9mm vs 45: Experts at Debate Two Pistol Calibers
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9mm vs 45 ACP: Which Is Bettter for Self-Defense? - Sniper Country
Is the .380 ACP an Adequate Caliber for Defensive Use?