9mm vs vs Which Chambering Has More 'Stopping Power'? - 40 cal vs 45 cal penetration
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A typical averages between ” and ” penetration. The Winchester FMJ, however, has a penetration of 25”. It expands to. 9mm vs 45 vs 40 ammo comparison 9mm vs 40 s&w vs 45 acp target . and backup 9mms, and partly for better windshield penetration.