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Ammunition

12.7 x 120 SR (v/664):

12.7 x 120 SR (v/690):

Calibre specification
Metric (mm) Imperial (in)
Calibre 12.7 x 120 .5
Name:
Case Type: Semi-rimmed, bottlenecked
Bullet Diameter: 12.98
Case Length: 120.3
Rim Diameter: 22.12
Neck Diameter: 13.88
Shoulder Diameter:
Base Diameter: 20.90
Total Length: 157.5
Weight: 130 grammes
Primer: Berdan
Year Introduced:
Also known as:
  • .50 Vickers-Armstrong V/664 and V/690
  • .5 in. Vickers Class D and D*
  • 12.7 x 120 SR

    • Countries using this calibre
    China
    United Kingdom

    Sources:

  • Goldsmith, 1994
  • Huon, 1986

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