Argentina
7.5"/52 (19 cm) OTO
Updated 30 November 2007
Used on the only "Treaty" cruisers ever to serve in a South American Navy.  Built by OTO at La-Foce and Livorno, Italy, these cruisers were considered to be very successful.
WNARG_75-52_OTO_Veintcinco_de_Mayo_pic.jpg

Argentina Heavy Cruiser Veintecinco de Mayo
USN Photograph
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Gun Characteristics
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Designation 7.5"/52 (19 cm) OTO
Ship Class Used On Veinticinco de Mayo class
Date Of Design 1927
Date In Service 1931
Gun Weight N/A
Gun Length oa N/A
Bore Length 389.0 in (9.880 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire 3 to 5 rounds per minute (?)
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Ammunition
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Type Bag
Projectile Types and Weights SAPC - 200 lbs. (90.7 kg)
HE - 200 lbs. (90.7 kg)
Bursting Charge N/A
Projectile Length N/A
Propellant Charge N/A
Muzzle Velocity 3,116 fps (950 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun 150 rounds
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Range
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Elevation With 200 lbs. (90.7 kg) SAPC Shell
MV of 3,116 fps (950 mps)
45 degrees 29,860 yards (27,300 m)
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Mount / Turret Data
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Designation Twin Mounts
   Veinticinco de Mayo (3):  N/A
Weight  N/A
Elevation -7 / +45 degrees
Elevation Rate N/A
Train about +150 / -150 degrees
Train Rate N/A
Gun recoil N/A
Loading Angle -7 to +12 degrees
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Data from
"Naval Weapons of World War Two" by John Campbell
"Cruisers of World War Two" by M.J. Whitley