They tossed a 2000 lb projectile up to 30 miles.
My dad's 5-inch staff used a 3 shot technique. One over, one under, one dead on. They nailed a jeep with an inert 5-inch round from 30 miles away during tests off Vieques. It was the base commander's jeep. The Iowa was almost denied the "meatball" flag because the jeep was destroyed.