V-3 Supergun

[XP67_Moonbat]

http://airlandseacraft.blogspot.com/2008/01/v-3-high-pressure-pump-gun.html

 

[Grey Havoc]

The Link in the first post no longer works, unfortunately.

Here's a couple of V-3 related articles which aren't too bad:

http://en.wikipedia.org/wiki/V-3_cannon
http://en.wikipedia.org/wiki/Fortress_of_Mimoyecques