This is a "chapter 2" portion for my 5.56 mm video that illustrated penetration on 1/4" welding steel. 500 Brinell steel is on a par with armor plating. A 12" disc, 3/8" thickness, from Mike Gibson Targets was used for the 80 yard test. I thought it would be educational to illustrate the various hardness properties of steel and how it effects bullet performance, in particular for a high-velocity bullet with a steel penetrator. Please also view the 5.56 mm test using welding steel to complete the full perspective.
Keywords: NATO, 62, gr, grain, M855, green, tip, bullet, penetrator, ammo, ammunition, armor, cartridge, 5.56, mm, Bushmaster, Varminter, AR15, AR, 15, AR-15, 3/8, hard, steel, penetration, target, shooting, Winchester, Q3269, Mike, Gibson, 500, Brinell
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