Uniquely, compared to other armour-piercing designs, the DS round instead of using tungsten or a similar hard metal for the core had lead, as with standard ball, but with a steel jacket. The penetration was not through punching the core through the armor but from the impact of the bullet flattening against the plate, transferring kinetic energy to the metal. The key to success for this technique was a very high bullet velocity. The result was that the bullet was punching a spall, about 20 mm in diameter, out of the armour, a size larger than the actual rifle caliber. The fragment would then ricochet inside of an armoured vehicle, possibly damaging the engine or killing the crew (an effect similar to that of a modern HESH tank round).

Well, I guess you didn’t bothered reading this part of article?

Sure, against light tanks, that were close enough, and you could hit something that would debilitate the tank.

Killing a tank with You are gays AT rifle, that’s literally adding isult to injury. :D