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French 6.5"/45
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This gun armed a number of French armored cruisers during the Great War.  The guns have been refurbished for the Coast Artillery.

          Relined French 164mm/45

     Caliber = 16.4 cm (6.5 inch)
     Shell weight = 52 kg (115 lbs)
     Muzzle velocity = 884 m/s (2900 fps)
     Relative ballistic performance: 0.88
     Muzzle energy = 20.322 megajoules = 7488.6 foot-tons
     Relative muzzle energy: 0.87
     Barrel length: 45 calibers

     Elevation          Range         Time      Velocity   Fall Angle
       2.5 deg        5000 meters     7.2 sec    559 m/s     3.4 deg
       5.0 deg        8000 meters    13.5 sec    428 m/s     8.1 deg
       7.5 deg       10200 meters    19.0 sec    361 m/s    13.4 deg
      10.0 deg       11800 meters    24.1 sec    321 m/s    19.1 deg
      12.5 deg       13200 meters    28.9 sec    297 m/s    24.8 deg
      15.0 deg       14400 meters    33.5 sec    283 m/s    30.4 deg
      20.0 deg       16200 meters    42.0 sec    271 m/s    40.4 deg
      25.0 deg       17700 meters    49.9 sec    273 m/s    48.4 deg
      30.0 deg       18800 meters    57.4 sec    279 m/s    54.9 deg
      35.0 deg       19500 meters    64.5 sec    288 m/s    60.0 deg
      40.0 deg       19900 meters    71.3 sec    298 m/s    64.1 deg
      45.0 deg       20000 meters    77.7 sec    308 m/s    67.5 deg
      50.0 deg       19700 meters    83.8 sec    317 m/s    70.5 deg

          Armor Penetration - Vertical Belt Armor
               (Relative armor quality, 0.90)
               Maximum penetration: 35.04 cm

     Elevation          Range            Belt       Deck
       1.2 deg        2700 meters        25 cm
       2.2 deg        4600 meters        20 cm
       4.0 deg        7000 meters        15 cm
       7.8 deg       10400 meters        10 cm
       8.1 deg       10600 meters         ...        2 cm
      19.7 deg       16100 meters         ...        4 cm
      20.3 deg       16300 meters         5 cm
      31.6 deg       19000 meters         ...        6 cm
      47.6 deg       19900 meters         ...        8 cm

     Maximum range = 20000 meters at 43.4 deg elevation


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