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PELE (Penetrator with Enhanced Lateral Effectiveness) rounds are a new type of ordnance developed by Rheinmetall in the late nineties and early two thousands. As the patent shows, they are similar in outward appearance to traditional long-rod penetrators, but are different in cross section: The basic principle of a PELE is that the outer walls of the penetrator are made of a denser material than the core. At the extremely high velocities that the penetrator strikes the target, density (rather than material strength) is one of the most important factors in determining penetration.
First off, hello everyone. First time posting here. At one point in time, shaped charges were said to make armour irrelevant, as they could penetrate large amounts of steel armour -- more armour than could be practically applied to tanks. But then came complex composite armours, which greatly diminished the penetrative power of shaped charges and spurred the development of APFSDS rounds utilizing long rods of dense metals at high velocities to perforate the armour. Since then, it has been conventional wisdom that APFSDS munitions were the most efficient anti-weapons, at least for pe