Krupp 105mm long gun M. 1904

 

 

0K105mmQF_1904

 

 

Bulgarian designation :

10.5-см скорострелно оръдие Д-30 “Круп”

German designation :

10cm K 04

Calibre :

105.2mm L/29.8

Weight of the barrel :

1345 kg

Weight of the carriage :

1410 kg

Weight of the empty limber :

450 kg

Weight in action :

2807 kg

Weight in marching order :

3509 kg

Barrel length :

3.135 m

Barrel grooves

number :

32

depth :

1.25 mm

width :

6.8 mm

Rifling

length :

22 calibres

twist :

progressive – 1 turn in 45 to 1 turn in 22.45 calibres

inclination :

4° to 8°

Height of the line of fire :

1350 mm

Cartridge

size :

105 x 505 x 129 R

weight :

3.65 kg

shelled :

24.69 kg

charge :

2.43 kg Röhrenpulver 97

Charge for separate ammo :

1st : 1.55 kg Röhrenpulver 97 + 30 g n.Gew.P. 71

2nd : 2.29 kg Röhrenpulver 97 + 30 g n.Gew.P. 71

Shells

 

10cm Gr. 96

weight :

18 kg – bursting charge : 2.2 kg Fp. 02

max. range :

10200 m (with percussion fuze)

10cm Gr. 14

weight :

17.8 kg – bursting charge : 670 g Grf. 88

max. range :

11000 m (with percussion fuze)

10cm Schr. 96

weight :

17.7 kg / 17.97 kg – 680 lead bullets x 11 g

16 kg – 506 steel bullets x 11.3 g

bursting charge : 204 g of black powder

max. range :

11000 m (with percussion and T&P fuze)

muzzle velocity :

583 m/s

10cm Gr. 15

weight :

18 kg – charge : 670 g Fp. 02

max. range :

11200 m (full charge with percussion and T&P fuze)

9200 m (reduced charge with percussion fuze)

muzzle velocity :

560 m/s

10cm Gr. 15

Haube

weight :

18.75 kg - bursting charge : 1.81 kg Fp. 02

18.75 kg - bursting charge : 1.55 kg Grf. 88

muzzle velocity :

551 m/s

max. range :

12700 m (with percussion fuze)

Elevation :

+ 30° / - 5°

Traversing angle :

4°

Recoil :

1050 mm

Transport :

drawn by horses in one single load

Remarks :

Quick firing heavy gun with hydraulic recoil system, running-out springs, single-motion wedge breech mechanism, not shielded, equipped with telescopic and dial sights, but not fitted for an independent line of sight. Three batteries were converted for mountain transport, divided in two loads. AFIK the Bulgarian artillery did not used this gun during World War.