No a bullet would deliver its energy more gradually as it penetrates and loses energy. Hence a larger caliber hollow point delivers its energy more suddenly than a pointed full metal jacket. A rock with only shallow penetration is going to deliver its energy all at once and it is not going to waste any energy by exiting the other side.
A rock falling 800 feet might be traveling at a third the speed of the 44 magnum. Progressively larger rocks would have larger kinetic energy and, in longer falls, they would have a higher terminal velocity because they have a smaller surface area by weight. At the other extreme, a coin that is denser than stone would fall more slowly because it has an extremely high surface area and would probably “flutter” as it fell.
