BL 4-inch Mk I – VI naval gun
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The BL 4-inch gun Mk I – Mk VI[5] were a family of early British breech-loading 4-inch naval guns.
Quick Facts Ordnance BL 4-inch gun Mk I – Mk VI, Type ...
Ordnance BL 4-inch gun Mk I – Mk VI | |
---|---|
Type | Naval gun |
Place of origin | United Kingdom |
Service history | |
In service | 1880s – 190? |
Used by | United Kingdom |
Specifications | |
Barrel length | Mk I 22.5cwt : 100 inches (2.540 m) bore (25 calibres)[1] Mk II – VI : 108 inches (2.743 m) bore (27 calibres)[2] 120 inches total[1] |
Shell | 25 pounds (11.34 kg)[2] |
Calibre | 4-inch (101.6 mm) |
Breech | 3-motion screw |
Muzzle velocity | Mk I 13cwt : 1,180 feet per second (360 m/s)[3] Mk II – VI : 1,900 feet per second (580 m/s)[4] |
Maximum firing range | Mk II-VI 7,700 yards (7,000 m)[2] |
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