Efforts of inventors to develop a dynamite-loaded artillery shell have always been foiled by the sensitivity of the explosive, which would not withstand the shock of its abrupt discharge. Now an Australian has patented a double shell with dynamite in its inner container. Fired from a rifled, gun or howitzer, the shell spins, and this forces some of the nitroglycerin in the dynamite to the surface of the inert absorbent of the dynamite, where the slightest impact will explode it.