Rearmament of our Cavalry with a 6-millimetre carbine, ballistically equal in all respects to the rifle of the Infantry.
There is a higher velocity and everything about the cartridge is better than the .38 S&W, ballistically.
1775, "pertaining to thrown objects," ultimately from Greek ballein "to throw" (see ballistics). Of rockets or missiles (ones that are guided while under propulsion, but fall freely), from 1949. Ballistic missile first attested 1954; they attain extreme heights, hence figurative expression go ballistic (1981) "become irrationally angry."