Blind shell

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

See also: Blind

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The non-corrosive aluminum modular frame is covered in a 900D Mossy Oak Duck Blind shell. It can accommodate four hunters and is equipped with grass straps and pockets, so you can incorporate natural vegetation for concealment.
Young Ross Ramone was a true pro as he blankly projected the deaf, dumb and blind shell that Young Tommy has crawled into.
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).