Buffalo Bore loads their ammunition with the highest quality components available to maximize the performance of the ammunition. This 9mm load is rated @ +P pressures (not +P+) and as such is safe to use in any/all 9mm chambered pistols that are in normal operating condition. The hard cast bullet (not lead, but hard cast) will not lead foul a functional barrel that is in a normal state of operation, including polygonal barrels, in any make of pistol, including Glock pistols. This load is designed to penetrate deep (4 to 6 feet) in a straight line, through flesh and bones and that flat nose does considerably more terminal damage, as it crushes its way through tissues, than a round nose bullet does as it slips and slides it way through tissues and that crushing action, keeps the bullet nose forward and ensures very deep straight-line penetration. Round nose bullets tend to get sideways as they slip and slide through tissues and this often causes them to veer off path. This bullet is d...