Krupp 75mm field gun M. 1910

 

 

Bulgarian designation :

75-мм скорострелно полско оръдие “Круп”

Turkish denomination :

7,5/30 sm. Krup seri ateşli sahra top

Calibre :

75mm L/30

Weight of the barrel :

360 kg

Weight of the breech-block :

28 kg

Weight in action :

1000 kg

Weight of ammunition wagon :

1730 kg

Length of the whole gun :

4 m

Barrel length :

2.250 m

Length of the bore :

2.025 m (L/27)

Twist of rifling :

Increasing, from 1 in 50 to 1 in 30 calibres

Barrel grooves

number :

28

depth :

0.75 mm

width :

5.92 mm

Shield

thickness :

4 mm

height :

94mm (foulded up)

150mm (fully open)

Cartridge

size :

75 x 280 x 90 R

shelled :

8.14 kg

charge :

465 g of Rottweil smokeless powder

H.E. Shell

weight :

6 kg - charge: 140 g of Picric acid

fuze :

percussion

max. range :

5900 m (afterwards increased to 8000 m)

Shrapnel

weight :

6.35 kg - charge : 75 g of black powder

270 bullets x 11 g

6.35 kg - charge : 75 g of black powder

295 bullets x 10 g

fuze :

Doppelzünder C/20 - 290 g

max. range :

5400 m

Muzzle velocity :

500 m/s

Elevation :

+ 16° / ?

Traversing angle :

7°

Recoil :

1320 mm

Wheels

weight :

140 kg

height :

1.30 m

track :

1.48 m

Transport :

drawn by six horses

Ammunition :

for Turkish Army: gun limber – 44, wagon limber – 48, wagon body – 48

12 ammunition wagons for every battery

Remarks :

Quick firing field gun, with recoil system with hydraulic buffer and springs, prismatic wedge breech mechanism, traverse on pivot. It was equipped with Goerz panorama sight, but it was not fitted for an independent line of sight. The sight was graduated up to 5800 m.

The shield was made of hardened Nickel steel and had a conical hood projecting forward for additional protection. It was composed by two parts. The upper shield was in two separate portions, the upper part mobile, the lower one fixed. It had two little windows for laying. The lower shield was mobile and could be folded up backwards for travelling.

It employed also Ehrhardt (Rheinmetall) ammunition bought in 1908.

The Turkish Army ordered 15 six-guns batteries of this model in 1910. Even if Bulgarian sources often refer to these guns as 75mm Krupp M. 1909, I prefer to use the denomination M. 1910, since they were ordered in 1910.

 

Pictures from Red Cliffs, Australia