Explosive Properties of a High Explosive Composition Based on Cis‐1, 3, 4, 6‐tetranitrooctahydroimidazo‐[4, 5‐d]imidazole and 1, 1‐Diamino‐2, 2‐dinitroethene (BCHMX/FOX‐7). Issue 5 (30th March 2018)