The only target the Dora crushed was Sevastopol. During five days, the gun shot 48 shells over 7 targets. Its monstruous power put down the forts of the town, delivering never seen damage at each shot. You know the "bang" a rifle does, so try to imagine the sound of apocalypse when a 7 ton shell is fired, using thousands pounds of gun powder, enough to send it dozens of miles away... This is not sci-fi, this was the madness of a tyran, and probably the most outstanding achievement in conventionnal balistics