CALIBRES OF THE VICKERS

6.5 x 50 (Japanese Type 38):

Calibre specification
Metric calibre (mm) 6.5 x 50
Imperial calibre (in) .256 x 1.97
Name: Arisaka
Case Type: Semi-rimmed, bottleneck
Bullet Diameter: 0.263
Case Length: 2.00
Rim Diameter: 0.471
Neck Diameter: 0.293
Shoulder Diameter: 0.425
Base Diameter: 0.455
Total Length: 2.98
Primer: 6
Year Introduced: 1897

Countries using this calibre
Japan

(Source: Goldsmith, 1994; Steinhauer, 2006)