This video tests the overpenetration capabilities of various common self-defense calibers and firearms through concrete blocks, simulating a fortified home defense scenario. The presenter demonstrates how 9mm and .45 ACP handguns, 5.56x45mm, 7.62x39mm, .308 Winchester, .45-70 Government, and 12 gauge shotgun loads (birdshot, buckshot, slug) perform against concrete. The findings suggest that concrete walls offer significant resistance, stopping most handgun rounds and fragmenting rifle rounds, though more powerful calibers like .308 and 7.62x39mm showed potential for partial penetration.
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