Barnes Bullets 21543: Barnes VOR-TX Handgun hunting ammunition loaded with the XPB bullets offers double-diameter expansion, 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.