Learn more about why people argue about 9mm vs. .45 ACP, why these two rounds have been hotly debated in the handgun world, and the pros and cons of both.
9mm vs. .45 ACP: Let's Talk About It
9mm vs 45: Experts at Debate Two Pistol Calibers
45 ACP: The Most Powerful Military Pistol Cartridge Ever
9mm vs. .45 ACP - Caliber Comparison - The Broad Side
Carry Calibers: .40 S&W Vs. .45 ACP Vs. 9mm - Gun Digest
Testing 5.7 vs 9mm - Caliber Comparison
10mm vs 45 ACP
Ammo Debate: The .380 Versus the 9mm - SHOT Business
45 ACP vs. 9MM - 80 Percent Arms
Cartridge Comparison: 9mm vs 10mm