Schneider-Canet 120mm long gun M. 1897

 

 

 

 

Bulgarian designation :

120-мм крепостно-обсадно оръдие Д-28

Schneider designation :

Canon de siège de 12cm sur affût à frein hydraulique

Calibre :

120mm L/28

Weight of the barrel :

1180 kg

Weight of the breech-block :

40 kg

Weight of the carriage :

1390 kg

Weight in action :

2570 kg

Weight of the platform :

2070 kg

Weight of the limber :

390 kg

Barrel length :

3.360 m

Barrel grooves

number :

30

depth :

1.5 mm

angle of twist :

progressive, 3° to 6°

Battering charge :

2 kg of smokeless powder (full charge)

0.6 kg of smokeless powder (reduced charge)

Shell

weight :

20 kg - charge: 1.35 kg of black powder

max. range :

7850 m (full charge)

6430 m (reduced charge)

Mine shell

weight :

20 kg - charge : 2 kg Schneiderite

max. range :

7850 m (full charge)

6430 m (reduced charge)

Mine shell

weight :

20 kg – charge : 3.16 kg

max. range :

7850 m (full charge)

6430 m (reduced charge)

Shrapnel

weight :

20 kg  - charge: 280 g of black powder

369 bullets x 16 g

max. range :

6500 m

Muzzle velocity :

480 m/s (full charge)

310 m/s (reduced charge)

Remaining velocity :

242 m/s at 7850 m

Elevation :

+ 30° / - 12°

Height of the wheels :

1.27 m

Track :

1.30 m

Transport :

 

Remarks :

Slow firing heavy gun (description). In 1897 twenty four guns were ordered. They were equipped with quadrant level ¼ circle with goniometer graduated in millièmes.

According with KOSAR. Artillerie im 20. Jahrhundert. Teil 2 – Mittelre Feldgeschütze, p. 124, this gun had a shield. But it is very unlikely, since it was not normal for a shield to be fitted to a gun with no recoil system.