Here's an interesting link for those interested in modern tank ordnance (but if you are, you probably already know!)
http://www.janes.com/article/61255/eurosatory-2016-rheinmetall-lifts-the-lid-on-new-130-mm-tank-gun
Rich
http://www.janes.com/article/61255/eurosatory-2016-rheinmetall-lifts-the-lid-on-new-130-mm-tank-gun
Rich