Assertion: mortar's shell | /r/HasProperty | dropped down the tube
Facets:
Source sentences:
text: When the shell was dropped down the tube, the firing pin struck the Ignition Cartridge in the shell's tail, detonating it.
text: Most mortars of less than 200 mm bore size use a fixed firing pin at the bottom of the tube, and as the shell is dropped into the tube, the shell slides down to the bottom, where the firing pin strikes the primer in the base of the shell, igniting the propellant.