Thomas Wilhelm, A Military Dictionary and Gazetteer
“ A spherical case-shot consists of a thin shell of cast iron, containing a number of musket-balls, and a charge of powder sufficient to burst it; a fuze is fixed to it as in an ordinary shell, by which the charge is ignited and the shell burst at any particular instant. A spherical case-shot, when loaded ready for use, has about the same specific gravity as a solid shot, and therefore, when fixed with the service charge of powder, its range, and its velocity at any point in its range, is about equal to that of a solid shot of the same caliber. ”
