Steel Plate Penetration Testing: AK, .357, .45-70, 9mm +P, SS109
This video tests the penetration capabilities of various calibers against mild steel plates of different thicknesses. Notably, rifle rounds like 7.62x39mm and 5.45x39mm from AK platforms penetrated 1/4 inch steel but were stopped by 1/2 inch. Handgun rounds like .357 Magnum and 9mm +P failed to penetrate even the 1/4 inch plate. Specialized rounds like SS109 easily penetrated 1/4 inch steel, while the .45-70 Government, despite its power, failed to penetrate due to bullet construction.







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