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May 20

Firearms Facts – 5.45x39mm Ammunition

In this episode of Firearms Facts, Moss Pawn and Gun discusses 5.45x39mm ammunition.

5.45x39mm Ammunition Specs:

  • Case Type: Steel, rimless, bottleneck
  • Bullet Diameter: 5.60 mm (0.220 in)
  • Neck Diameter: 6.29 mm (0.248 in)
  • Shoulder Diameter: 9.25 mm (0.364 in)
  • Base Diameter: 10.00 mm (0.394 in)
  • Rim Diameter: 10.00 mm (0.394 in)
  • Rim Thickness: 1.50 mm (0.059 in)
  • Case Length: 39.82 mm (1.568 in)
  • Overall Length: 57.00 mm (2.244 in)
  • Rifling Twist:
    • 255 mm (1 in 10 inch) or
    • 195 mm (1 in 7.68 inch)
  • Primer Type: Berdan or Small rifle
  • Maximum Pressure: 380.00 MPa (55,114 psi)