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Ammunition

12.7 x 81 SR (v/565):

Calibre specification
Metric (mm) Imperial (in)
Calibre 12.7 x 81 .5
Name: v/565
Case Type: Semi-rimmed, bottlenecked
Bullet Diameter: 13.05
Case Length: 81.2
Rim Diameter: 19.55
Neck Diameter: 13.80
Shoulder Diameter:
Base Diameter: 18.32
Total Length: 107.2
Weight: 82 grammes
Primer: Berdan
Year Introduced:
Also known as:
  • 12.7mm Breda
  • 12.7 x 81 SR
  • 12.7mm Type 1
  • 12.7mm Mod. 36
  • 12.7mm Japanese
  • .5 in. V/565 Vickers-Armstrong

    • Countries using this calibre
    Hungary
    Italy
    Japan
    Spain

    Sources:

  • Goldsmith, 1994
  • Huon, 1986

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