 This meant that the blast effects of the weapon were completely random and of dubious efficacy as an anti-personnel weapon.It was of no practical value for siege combat or other light artillery purposes, but it made a loud bang.Small pieces of metal and tubes were welded onto the outside of the casing, reducing the weapon's accuracy even further than its already non-aerodynamic design, but contributing greatly to the whistles and shrieks which it made when in flight.