The Gun Specifications

Canon de 220  L  Mle  1917  Schneider

Manufacturer: Schneider et Cie., Le Creusot, France
Calibre 220mm
Length of barrel L/35 (L34.87):  7,672.5mm
Length of rifling (L/26.80): 6,113.5mm
Twist of rifling 92 grooves, 7 degrees (to right)
Barrel construction Jacketed
Weights Barrel – 9,280kg (with breech block)
Weight travelling (1 load): 25,880kg; (2 loads): 30,120kg
Weight in action 23,000kg
Traverse 360 degrees
Elevation 0 to +37 degrees
Ammunition 1 22cm Gr. 534 (f) 

weight:  

104.05kg

M/velocity:  

754m/sec

Range :

21,600m
Ammunition 2 22cm Gr. 535 (f)

weight:  

104.75kg

M/velocity:  

766m/sec

Range :

22,800m
Charge weight    20kg
Rate of fire   1 round/minute