Barrel Shot (バレルショット Bareru Shotto) is a composite high-speed [[:Special:Ask/-5B-5BCategory:Spells-5D-5D-20-5B-5Bspell-20category::-5D-5D-20-5B-5Bspell-20type::-5D-5D|bombardment spell]] with supportive effects cast by Nanoha Takamachi. It is a pre-requisite for casting other extremely powerful bombardments, as it assists sighting, stablizing the bombardment route, and controlling the energy diffusion. Despite the similarities, it is not the similar shockwave sent from Bardiche to the Defense Program of the Book of Darkness in A's episode 12, which is for physical destruction purpose.