Ultritium concussion shell

From Memory Alpha, the free Star Trek reference.

The ultritium concussion shell is an ultritium-based artillery weapon used by the Dominion to bombard ground targets. These were used in a show of force against a Starfleet team led by Captain Benjamin Sisko on Torga IV in 2373, who had taken possession of a downed Jem'Hadar attack ship. However, the charges never struck the ship directly, since the Dominion forces were concerned about injuring a Founder inside the ship. (DS9: "The Ship")