At the AD 67 Siege of Jotapata, where Josephus commanded, a single spear from a [Roman] scorpion ran through a row of men. A ballista stone took the head off a Jewish defender standing near Josephus; the man’s head was found 660 yards (600 metres) away.
Source:
Dando-Collins, Stephen. “Part II: The Legions – Artillery and Siege Equipment.” Legions of Rome: The Definitive History of Every Imperial Roman Legion. Thomas Dunne Books, 2012. 71-2. Print.
Original Source Listed:
Jos., JW, 3, 7, 23.
Further Reading:
Siege of Yodfat (Hebrew: יוֹדְפַת, also Jotapata, Iotapata, Yodefat)
Ouch.