Swedish
15.2 cm/50 (6") Model 1903
Updated 09 May 2006
An early Bofors design.  Interesting in that these guns were mounted in enclosed gunhouses, unusual in an age where most cruiser guns were in single open shields.  Apparently, from examining photographs, they were also individually sleeved.
WNSweden_6-50_m1903_Fylgia_pic.jpg

Armored Cruiser Fylgia
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Gun Characteristics
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Designation 15.2 cm/50 (6") Model 1903
Ship Class Used On Fylgia and Oscar II
Date Of Design 1903
Date In Service 1907
Gun Weight about 7.63 tons (7.75 mt)
Gun Length oa N/A
Bore Length about 300 in (7.620 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire about 3 - 4 rounds per minute
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Ammunition
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Type Bag
Projectile Types and Weights AP - 101 lbs. (46 kg)
Bursting Charge N/A
Projectile Length N/A
Propellant Charge N/A
Muzzle Velocity 2,789 fps (850 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun N/A
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Range
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Elevation With 101 lbs. (45.8 kg) AP shell
Range @ 30 degrees about 15,000 yards (13,716 m)
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Mount / Turret Data
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Designation Two-gun Turrets
  Fylgia (4) and Oscar II (4)
Weight  N/A
Elevation about -5 / +30 degrees
Elevation Rate N/A
Train about +120 / -120 degrees
Train Rate N/A
Gun recoil N/A
Loading Angle N/A
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Data from
"Naval Weapons of World War Two" by John Campbell
"Cruisers of World War Two" by M.J. Whitley