e/Scram cannon

Information
has gloss	eng: The scram cannon is a hypothetical kinetic energy weapon based on ram accelerator technology. The scram cannon uses a projectile that uses supersonic combustion ramjet technology to increase the muzzle velocity to levels that are impossible with normal gunpowder based guns; firearms are limited by the speed of sound in the propellant gasses, which limits the velocities to about Mach 5 (see internal ballistics).
lexicalization	eng: scram cannon
instance of	e/Weapons in science fiction