Encyclopedia · Projectiles and ammunition

Spherical shell

A spherical shell is a hollow cast-iron ball carrying a bursting charge and fuze, fired from smoothbore guns, howitzers, and mortars. It burst into fragments on the action of its fuze.

Also known as: spherical shell, common shell.

ClassExplosive smoothbore projectile
ConstructionHollow iron sphere, bursting charge, and a fuze
Fired fromGuns, howitzers, and mortars
FuzeTime or, at close range, percussion arrangements

The smoothbore shell

The spherical shell was the explosive projectile of the smoothbore guns, howitzers, and mortars: a hollow iron sphere filled with a black-powder bursting charge and closed with a fuze at the fuze hole. When the fuze fired the charge, the shell broke into fragments.

Its wall thickness, diameter, and fuze seat identify a recovered spherical shell, and the fuze most often used with it was a time fuze such as the Bormann or a paper time fuze set to burst the shell over or among the target.

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