enrique262:30,5cm (305mm) cartridge casing for the Krupp Küstenmörser 97/09 Gerät (Coastal Mortar Mo
enrique262:30,5cm (305mm) cartridge casing for the Krupp Küstenmörser 97/09 Gerät (Coastal Mortar Model 1897/1909) and the 1918 Schwere Kartaune Beta-M-Gerät. To illustrate the size, the casing is photographed with an original Model 1894 2. Garde-Fußartillerie -Regt. (Foot Artillery) Mannschaften issued Pickelhaube which would have been worn by the troops firing this weapon. 30,5cm Cartridge Casing Data: Height - 457mm (17.99 inches)Actual Calibre - 315mm (12.40 inches)Base Diameter - 341mm (13.42 inches)Weight - 17.60 kg (38.80 lbs.)Manufacturer - Polte MagdeburgDate - October 1914The guns in question:Beta-M-GerätKüstenmörser 97/09 GerätThe use of a brass casing instead of the bagged charges found in most heavy artillery was because it reduced corrosion in the breech of the guns. Source. -- source link