Essentially a multiple-round muzzle loader, Metal Storm is an interesting way to fire lots of bullets at something.
The FAQ is amusing. The entry for “With all those rounds stacked up in a barrel, doesn’t the muzzle velocity change with each successive firing?” contains the answer –
“… tailoring of muzzle velocities can be that a projectile stack can be specifically loaded with calculated propellant volumes such that when fired at a predetermined rate and range, a beneficial concentration of kinetic energy can be delivered to a target.”
I guess that only a defense contractor type could use the word “beneficial” in association with a weapon like this….