Among the many options of self-defense ammunition, AmmoFast offers one of the most popular choices among self-defense experts. This Federal Premium® Hydra-Shok® ammo is loaded to full power using a rigorous manufacturing process and precise testing to ensure this 10mm Hydra-Shok load performs with consistency and precision. This ammunition is made up of a notched copper jacket to initiate and control expansion. It also has a center-post hollow-point design which provides it’s reliable expansion. The Hydra-Shok design is what makes it the perfect self-defense option.