what is cordite used for
Cordite's use was further developed in the early years of World War II, for launching 2-inch and 3-inch diameter non-rotated, anti-aircraft projectiles. Small cordite rocket charges were also developed for ejector seats made by the Martin-Baker Company. Cordite is now obsolete and it is no longer produced. It has been replaced by other propellants, such as the Improved Military Rifle (IMR) line of extruded powder or the WC844 ball propellant currently in use in the 5.56 x 45 mm NATO.