France
75 mm/50 (2.95") Model 1922, 1924 and 1927
Updated 28 March 2013
Adapted from the SP 75 mm gun by shortening the barrel and given a high-elevation mounting, this AA weapon was obsolete by the start of World War II.  Fired fixed rounds.

I have been unable to determine the differences between the Model years.  Possibly these were slight improvements.
WNFR_3-50_m1922_Bearn_pic.jpg

Experimental Carrier Béarn in 1937
The 75 mm (2.95") guns are in the mountings just in front of the island and below the flight deck
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Gun Characteristics
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Designation 75 mm/50 (2.95") Model 1922, 1924 and 1927
Ship Class Used On
(see Note)		 Bretagne, Béarn, Duquesne, Suffren, Jeanne D'Arc, Duguay-Trouin, Chacal (2100 tonnes) and Bourrasque (1500 tonnes) classes
Date Of Design 1922, 1924 and 1927
Date In Service 1926
Gun Weight 1.05 tons (1.07 mt)
Gun Length oa N/A
Bore Length 147.6 in (3.75 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire 8 - 15 rounds / minute
Note:  Of the Suffren class, only Suffren herself carried these guns,  the other members of her class carried the 90 mm/50 Model 1926.
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Ammunition
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Type Fixed
Weight of Complete Round 26.5 lbs. (12 kg)
Projectile Types and Weights
(see Note 1)		 HE - 13.07 lbs. (5.93 kg)
Starshell - N/A
Bursting Charge N/A
Projectile Length about 12.8 in (32.5 cm)
Complete round 38.1 in (96.67 cm)
Propellant Charge 4.81 lbs. (2.18 kg) BM5
Cartridge - 13.4 lbs. (6.08 kg)
Muzzle Velocity 2,789 fps (850 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun
(see Note 2)		 Duguay-Trouin:  135 rounds
Duquesne and Suffren:  500 rounds
Jeanne D-Arc:  400 rounds
Others:  N/A
Notes:

1) Actual projectile designations:
      HE - OEA Mle 1925
      Starshell - OEcl Mle 1923

2) Duguay-Trouin outfit for four guns was 540 rounds HE, 120 rounds illumination and 90 practice rounds.  Jeanne D-Arc outfit was 1,600 rounds and 20 starshells
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Range
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Elevation 13.07 lbs. (5.93 kg) HE Shell
Range @ 40 degrees 15,420 yards (14,100 m)
AA Ceiling @ 90 degrees about 26,250 feet (8,000 m)
Effective AA Range 24,600 feet (7,500 m)
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Mount / Turret Data
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Designation Single open mountings
   Bretagne (8), Bearn (6), Duguay-Trouin (4), Chacal (2), Bourrasque (1), Duquesne (8), Suffren (8) and Jeanne D-Arc (4):  Model 1922
Weight  N/A
Elevation -10 / +90 degrees
Elevation Rate N/A
Train about +150 / -150 degrees
Train Rate N/A
Gun recoil N/A
Loading Angle -10 / +75 degrees
Note:  The Bourrasque class had their gun removed during refits in the 1930s.
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Data from
"Naval Weapons of World War Two" by John Campbell
"Navies of the Second World War - The French Navy" by Henri le Masson
"French Light Cruisers" article by Jean Guigliani and Albert Moreau in "Warships International No. 3, 2001"
"French Cruisers:  1922 - 1954" by John Jordan and Jean Moulin
"Battleships of World War Two," "Cruisers of World War Two" and "Destroyers of World War Two" all by M.J. Whitley
Page History

24 March 2007 - Benchmark
03 March 2012 - Updated to latest template
28 March 2013 - Added use on destroyer classes and minor details