Blind shell

(Gunnery) a shell containing no charge, or one that does not explode.

See also: Blind

References in periodicals archive ?
The non-corrosive aluminum modular frame is covered in a 900D Mossy Oak Duck Blind shell.
The 900-kilogram robot is powered by an engine or by remote control to detect antipersonnel mines, antitank mines and blind shells (shells that contain no charge or do not explode).