The SD bullet also known as a Self Defense bullet is specifically designed for one shot stopping power and for all popular Handguns. This is an extremely lethal bullet similar in performance to the Hog or Hog Master hunting bullets but without over penetration as required by law enforcement agencies. This is also a very good tactical bullet and can be very effectively used in counter-terror applications. Expect this very popular bullet to exceed your wildest expectations. It also comes with the trade mark low shot start pressure, low recoil and increased muzzle velocity common to Peregrine Bullets products.