Barnes VOR-TX Handgun Line of ammunition features the proven Barnes XPB? Bullet. With deep dependable penetration and rapid double-diameter expansion make the XPB bullets ideal for hunting. Offering maximum weight retention and excellent accuracy the XPB bullets provide maximum tissue and bone destruction pass-through penetration and devastating energy transfer. Bullets open instantly on contact ? no other bullet expands as quickly. Nose peels back into six sharp-edged copper petals destroying tissue bone and vital organs for a quick humane kill.