The U.S. Army and Tucson-based Raytheon Missile Systems successfully fired 10 precision-guided Excalibur artillery projectiles during the final phase of compatibility testing at Yuma Proving Ground, the company said Tuesday.

The recent live-fire demonstration, funded by the U.S., Germany and supported by Raytheon-funded initial testing, completed an effort to verify Excalibur's compatibility and performance with the German-made PzH2000 self-propelled howitzer.

During the testing, the 10 Excalibur projectiles were fired at targets at ranges from nine to 48 kilometers, with every round striking within three meters of the targets. Similar capabilities were proven during Excalibur testing in October from the Swedish Archer and U.S. howitzers, Raytheon said.

The German Ministry of Defence is evaluating Excalibur and competitive technologies, with a contract decision planned in 2014, the company said.

Contact Assistant Business Editor David Wichner at or 573-4181.