The Barnes Bullets 21547 is a superior choice when it comes to handgun hunting ammunition. This line of ammo, loaded with the XPB bullets, promises double-diameter expansion, unrivaled weight retention, and pinpoint accuracy.XPB bullets are designed for maximum impact, causing extensive tissue and bone damage, ensuring pass-through penetration, and transferring devastating energy. Unlike other bullets, the XPB bullets undergo immediate expansion upon contact.The bullet\'s nose, on contact, unfolds into six sharp-edged copper petals, inflicting widespread damage on tissue, bone, and vital organs. This ensures a swift, humane kill - a testament to the stunning efficiency of the Barnes Bullets 21547.