The common shell is the ordinary cast-iron projectile. In addition to its fuse-hole it is provided with a loading-hole opening on the shoulder.
The double shell is similar to the common shell, except that it is nearly four calibres long and its chamber is provided with longitudinal strengthening ribs. It is only used in the 7-inch gun.
Zinc Passing-Box.
Armstrong Segment Shell.
Armstrong Shrapnel.
Woolwich Cartridge.