The Ordnance BL 6 inch 30cwt howitzer was a British medium howitzer used in the Second Boer War and early in World War I. The qualifier "30cwt" refers to the weight of the barrel and breech together which weighed 30 hundredweight (cwt) : 30 x 112 lb = 3360 lb. It can be identified by the slightly flared shape of the muzzle and large recuperator springs below the barrel.

Type - Medium howitzer
Place of origin - United Kingdom
Service history
In service - 1896 - 1918
Wars - Second Boer War, World War I, Greco-Turkish War (1919–1922)
Number built - 120
Weight - 7733lb (3507kg)
Crew - 10
Shell - Lyddite : 122 lb 9 oz (55.59 kg), later 100 lb (45.36 kg);
Shrapnel : 100 lb (45.36 kg)
Calibre - 6-inch (152.4 mm)
Recoil - Hydro spring, 18 inch
Carriage - Wheeled, box trail
Elevation - -10° - 35° (wheeled carriage) , 35° - 70° (siege mount)
Muzzle velocity - 777 ft/s (237 m/s)
Maximum firing range - 5,200 yds (122lb 9oz shell, on wheeled travelling carriage); 7,000 yds (122lb 9oz shell, on siege mounting)
7,000 yards (100 lb shell, on wheeled travelling carriage)