Here you can select the number of cores, as well as their materials and weights.
The core number: Depending on your application a core quantity of 1 2 or 3 can be beneficial. Note that depending on the caliber there is a minimum mass for a core, starting at 30grs.
The core material: Each core can consist of a different material. For many hunting purposes for instance a front core made of soft lead and a rear core consisting of PbSb10 (a lead antimony alloy with 10% antimony to increase the hardness) will work well.
The core weight: The weight for each core can be selected within the range of minimum weight to properly handle the core and the maximum weight which is defined by the jacket, the shape, meplat diameter and base style. The bullet weight is then the sum of all core weights plus the jacket mass.
How many cores do you want for your bullet:
Total weight of all cores:
Must be between 30 and 255 grs.