As is known, the use of active-reactive projectiles allows either to increase the range with a fixed mass of the gun or to reduce the mass of the gun at a fixed range, we were not interested in either the first or second tasks. We set ourselves a completely different task before ourselves, that is, as a cannonball of caliber 150-200 turned into an effective weapon in the fight against armored vehicles of the enemy. And it turned out that if you make a small modification to the cannon shells and shoot them on a horizontal surface, the projectile in the altitudes of 100-150 meters will give a scatter of a pile of half a meter. That is, if aiming at the center of the tank, then in the worst case we'll get either on the tower or on the caterpillars, in both cases the tank will destroyed, even if the crew inside will survive, it's not the fighters but the contused panic-mongers who do not know where to run to where to jump. The whole idea is to use cheap ready-to-recycle large-caliber projectiles, and give them a second wind. And with the use of APC or URS of LDCs, it will hit the tank on long-range steps for a few kilometers.Here is many militaries and they know well without me. As for the initial speed of the projectile's flight, in our case this parameter is not of decisive importance, we get the effect from the fact that we are shooting the tank almost at close range from a large caliber, and in a mild time we can release ten cannon charges. In short, a robot costing $ 30-50 thousand enters into a firefight with a tank worth seven million dollars, that is, a ratio of 1 to 140. And the tank if the robot began to attack the chance to survive is almost none.