9mm vs 45 ACP - Which is the Best Caliber?
Posted by Ricky B. on May 5th 2026
Reviewed by Ricky B., Staff Member · Last updated: May 5, 2026
The Core Difference: Bullet Diameter and Energy Delivery
The 9mm Luger fires a .355-inch bullet; the .45 ACP fires a .452-inch bul
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