Die sets for straight wall cases typically include three dies to accommodate the unique reloading process for these cases. Full-length resizing (FL) and neck expansion cannot be completed in a single operation, which is why a three-die setup is essential. The FL resizing die is equipped with a decapping rod assembly to remove spent primers. The expander die (EXP) features a neck-expanding plug that ensures the neck is properly sized for bullet fit. The seating die (ST) includes a bullet guide, a built-in crimp ring and the appropriate seating plug to ensure precise bullet placement and secure seating. This multi-die process ensures reliable, consistent reloading for straight wall cases.