The dual-core Doppelkern bullet consists of two lead cores of differing hardness. The front core fragments reliably and ensures great shock effect. In order to control this deformation, a unique gilding metal cup separates the rear core from the soft front core. The core weight proportion is 50:50, which guarantees a perfect combination of shocking power with the high probability of an exit wound. This design results in a straight bullet path for that all-important exit wound.