Penetration Test - .223 vs 5.56 vs Mosin Nagant - TheFireArmGuy
This video conducts a penetration test comparing .223 Remington and 5.56 NATO rounds fired from an AR pistol against 19 OSB boards. While both 55-grain FMJ rounds penetrated 10 boards, the 5.56 slightly outperformed the .223. A Mosin Nagant in 7.62x54R was then tested, easily penetrating all 19 boards, demonstrating its superior power.









