152mm bronze mortar M. 1867

 

 

Russian_152mm_mortar

 

 

Bulgarian designation :

6-дюймова мортира

Russian designation :

6-дюймовая медная мортира обр. 1867 г.

Calibre :

152.4mm L/8.88

Weight of the barrel :

1572 kg

Weight of the breech-block :

151.5 kg

Weight in action :

3128 kg

Weight in marching order :

4095 kg

Weight of the platform :

1228 kg

Barrel length :

1.354 m

Barrel grooves

number :

24

depth :

1.78 mm

width :

16.43 mm

Battering charge :

2.5 kg of artillery gunpowder (full charge)

0.61 kg (lower charge)

Cast iron s.

length :

2.5 calibres (373 mm)

weight :

36,9 kg – charge : 1.37 kg

muzzle velocity :

219 m/s (with full charge)

max. range :

3980 m (with full charge)

Cast iron s.

length :

2 calibres (296 mm)

weight :

29.1 kg – charge : 1.02 kg

muzzle velocity :

230 m/s (with full charge)

max. range :

4020 m (with full charge)

Cast iron s.

length :

2.5 calibres (385 mm)

weight :

30.7 kg – charge : 2.15 kg

battering charge :

2.33 kg

muzzle velocity :

230 m/s

max. range :

4020 m

Elevation :

+ 75° / -5°

Transport :

drawn by six horses

Remarks :

Russian bronze mortar delivered in 1878, after the war of Liberation. In firing position it should be placed on a wooden platform. It could also fire with three different charges at a maximum range of 700 m, 1600 m and 3800 m respectively, but, according with Angel Angelov, the Bulgarian gunners usually did not fire at full charge, since the mortar tended to turn over due to the recoil.

 

Pictures from Sofia Military Museum