Learn English – Alternative term for “fire and forget”

I recall reading an instruction manual to an old FPS (first person shooter) game years back, and it noted a particularly destructive cannon being the "ultimate in fire and forget weaponry", since it essentially destroys everything in a large room, sometimes including the player wielding this portable cannon.

Is there a more accurate term than "fire and forget" though? The general use of this term seems to revolve around the ability of the user to open a door, blast the weapon, and close the door before the splash (area of effect) damage destroys the wielder along with everything else in the room.

While technically accurate, it's to my understanding that "fire and forget" describes the ability of a projectile to automatically track its target, such as guided missiles; rather than the ability of the user to use it and not concern themselves with the result since aiming isn't a concern.