Krupp 87mm field gun M. 1873

Bulgarian designation :8,7-см далнобойно полско оръдие “Круп”Romanian designation :Tunurile de 9 model 1875Krupp designation :9cm Feldkanone C/73Calibre :87mm L/24Weight of the barrel :487 kgWeight of the breech-block :29 kgWeight of the carriage :490 kgWeight in action :965 kgWeight of the limber :480 kg (empty) – 830 kg (loaded)Weight in marching order :1445 (empty) – 1795 kg (loaded)Weight of the ammo wagon :1980 kgBarrel length :2.1 mLength of the bore :1875 mmBarrel groovesnumber :24depth :1.25 mmwidth :8.40 mmBattering charge :1.5 kg of black powder (Grobkörniges Art.-Pulver)Common shelllength :2.5 calibresweight :6.355 kg – charge: 190 gfuze :105 gmax. range :5200 mmuzzle velocity :465 m/sShrapnelweight :7.15 kg – charge: 170 g of black powder180 bullets x 15 gfuze :time – graduated up to 10’max. range :2700 mmuzzle velocity :425 m/sCase shotweight :6.18 kg  - 82 ballsmax. range :400 mLength of the line of sight  :1000 mmElevation :+ 24° / + 8°Track :1.528 mTransport :drawn by six horsesAmmunition :carriage – 1 case shotlimber – 20 shells, 10 shrapnel, 2 case shots and 35 chargesammunition wagon – 55 shells, 30 shrapnel, 2 case shots and 90 charges8 ammunition wagons for every eight guns batteryRemarks :Turkish slow firing steel guns, Broadwell wedge breech mechanism with an expanding steel obturation ring. The first Balkan country that adopted this gun was Romania, buying in 1874 8 batteries to equip 3rd and 4th artillery regiments. In 1875 Turkey bought from Krupp 100 of these guns. The Russian Army captured some of these guns in 1877-78 and delivered 18 of them to the Bulgarian Army.