87mm light field gun M. 1867

 

 

 

 

Bulgarian designation :

4-фунтово оръдие

Russian designation :

4-фунтовая медная пушка обр. 1867 г.

Calibre :

86.8mm L/20

Weight of the barrel :

345.4 kg

Weight of the breech-block :

30.7 kg

Weight of the carriage :

290.7 kg (without wheels)

Weight in action :

780 kg

Weight of the limber :

504 kg

Weight in marching order :

1284 kg

Barrel length :

1.740 m

Barrel grooves

number :

12

depth :

1.27 mm

width :

15.62 mm

Battering charge :

610 g of black powder (full charge)

153 g (reduced charge for cast iron shell)

Cast iron s.

length :

2 calibres (175 mm)

weight :

5.73 kg – charge: 205 g of artillery gunpowder

fuze :

percussion fuze M. 1875 – 205 g

muzzle velocity :

306 m/s (full charge)

137 m/s (reduced charge)

max. range :

3414 m (full charge)

1067 m (reduced charge)

Shrapnel

weight :

5.93 kg - charge: 68 g

140 / 150 bullets x 10.6 g x 12.7 mm

fuze :

10 sec. time fuze

muzzle velocity :

301 m/s

max. range :

2240 m

Canister shell

weight :

6.61 kg – charge: 94 g of artillery gunpowder

111 bullets x 12.7 mm

fuze :

percussion fuze M. 1875 – 205 g

muzzle velocity :

288 m/s

max. range :

2560 m

Case shot

weight :

4.81 kg – 48 balls x 74 g x 24 mm

max. range :

533 m

Sharoha

weight :

? kg – charge : 16 g

34 balls x 24 g

max. range :

1707 m

Length of the line of sight  :

906 mm

Elevation :

+ 21°30’ / - 7°

Wheels

weight :

144 kg

height :

1394 mm

track :

1473 mm

Transport :

drawn by six horses

Ammunition :

limber : 18 shells

ammunition wagon : 56 shells

Remarks :

Russian bronze light field gun with horizontal breech mechanism. The carriage was made of iron and had no seats for the gunners. It could fire also a shell with spherical solid head (шароха) and an incendiary shell, which was employed by the Russian artillery only till 4 May 1875. The sigh was not graduated according with the range, but was marked in Russian lines (2.54 mm) that did not correspond directly to the distance expressed in meters, for example a distance of 500 m corresponded to 6 ½ lines, while a distance of 1000 m to 15, and not 13 lines.

 

Pictures from Sofia Military Museum

 

 

 

4pdrRussian 1867_1