Originally Posted by sven hassell

The worlds 'strongest' gun(im assuming you mean a weapon that can be carried and fired by a single soldier with kinetic rounds,not explosive missiles so rocket launchers is out) has got to be the Croatian RT-20 rifle.
It fires the Hispano 20 x 110mm round which is a 130gram (2000 grains) at a muzzle velocity of 850 metres a second. If anyone has any pictures of the effects of this rifle when an AP load has been used against infantry I would be interested to see just how much devastation it can cause . If anyone knows of a gun(personal firearm) which is 'stronger'(has superior penetration) then I apologise for my mistake.