RML 64-pounder 64 cwt gun
| RML 64-pounder 64 cwt gun | |
|---|---|
| Fortification mounted MK III gun firing at Fort Glanville Conservation Park, South Australia | |
| Type | Naval gun Fortification gun | 
| Place of origin | United Kingdom | 
| Service history | |
| In service | 1865–190? | 
| Used by | British Empire | 
| Production history | |
| Designer | Woolwich Arsenal | 
| Designed | 1864 | 
| Manufacturer | Woolwich Arsenal Elswick Ordnance Company | 
| Variants | Mk I, II, III | 
| Specifications | |
| Mass | 64-long-hundredweight (3,300 kg) | 
| Length | 9.83 in (25.0 cm) | 
| Barrel length | 97.5 in (248 cm) bore | 
| Shell | 64 pounds (29 kg) | 
| Calibre | 6.3 inches (160 mm) | 
| Action | RML | 
| Breech | Muzzle-loading | 
| Muzzle velocity | Wrought-iron tube : 1,252 feet per second (382 m/s) Mk III steel tube : 1,390 feet per second (420 m/s) | 
| Effective firing range | 5,000 yards (4,600 m) | 
The RML 64-pounder 64 cwt gun is a Rifled, Muzzle Loading (RML) naval, field or fortification artillery gun manufactured in England in the 19th century, which fired a projectile weighing approximately 64 pounds (29 kg). "64 cwt" refers to the gun's weight rounded up to differentiate it from other "64-pounder" guns.