|
Designation | 8'/30 (20.3 cm) Marks 1 and 2 |
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Ship Class Used On | Atlanta and Chicago Classes |
Date Of Design | about 1883 |
Date In Service | 1886 |
Gun Weight | 29,100 lbs. (13,200 kg) not including breech |
Gun Length | N/A |
Bore Length | 240 in (6.096m) |
Rifling Length | N/A |
Grooves | N/A |
Lands | N/A |
Twist | Increasing RH 1 in 180 to 1 in 30 at the muzzle |
Chamber Volume | N/A |
Rate Of Fire | about 0.5 - 1 round per minute |
Type | Bag |
Projectile Types and Weights | Common - 260 lbs. (118 kg) |
Bursting Charge | N/A |
Projectile Length | N/A |
Propellant Charge | 49.6 lbs. (22.5 kg) |
Muzzle Velocity | 2,000 fps (610 mps) |
Working Pressure | N/A |
Approximate Barrel Life | N/A |
Ammunition stowage per gun | N/A |
Elevation | Range |
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20 degrees | about 14,000 yards (12,800 m) |
Designation | Single Barbette Mount Atlanta (2): Mark 1 Charles 3 10 1 download free. Single 'Half-turret' 1 Chicago (4): Mark 2 |
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Weight | N/A |
Elevation | -5 / +20 degrees |
Elevation Rate | N/A |
Train | about +150 / -150 degrees |
Train Rate | N/A |
Gun recoil | N/A |
Loading angle | N/A |