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According to STANAG 4172 and the official NATO proofing guidelines the 5.56×45mm NATO case can handle up to 420.0 MPa (60,916 psi) piezo service pressure. In NATO regulated organizations every rifle cartridge combination has to be proofed at 537.5 MPa (77,958 psi) to certify for service issue. [ 18 ]
The 5.56×45mm NATO cartridge with the standard 62 gr. steel core bullets (NATO: SS109; U.S.: M855) will penetrate approximately 15 to 20 in (38 to 51 cm) into soft tissue in ideal circumstances.
Cartridges generally fall into one of 4 categories listed below. SAAMI Recognized Cartridge – Ex. 308 Win, 6.5 Creedmoor, 7mm Remington Mag; C.I.P Recognized Cartridge – Any ammunition sold in a C.I.P governed nation. Mil-Spec Cartridge – 5.56×45, 7.62×51, 12.7×99 Nato (50 BMG)
22 lis 2009 · The 5.56x45mm NATO cartridge with the standard military ball bullet (NATO: SS109; U.S.: M855) will penetrate approximately 15 to 20 inches (38 to 50 cm) into soft tissue in ideal circumstances. As with all spitzer shaped projectiles it is prone to yaw in soft tissue.
The 5.56x45mm ammunition is divided into two categories. These are the M193 pattern and NATO pattern ammunition. The older M193 bullets are lighter, have a higher muzzle velocity and require a 1 in 12 inch rifling. The NATO ammunition uses heavier bullets that require a 1 in 7 inch rifling.
Cartridge dimensions [] The 5.56×45mm NATO has 1.85 ml (28.5 grains H 2 O) cartridge case capacity. 5.56×45mm NATO maximum NATO cartridge dimensions. All sizes in millimeters (mm). Americans would define the shoulder angle at alpha/2 = 23 degrees.
Handful of 5.56mm. The 5.56×45mm NATO round, pronounced " five-five-six ", is an intermediate cartridge and the main bullet type used by guns made for NATO militaries. It was first used in the Vietnam War as the main bullet used by the US military.
