The Winchester PDX1 Defender 9mm 147 Gr JHP represents premium self-defense ammunition engineered for maximum stopping power. This 147-grain bonded jacketed hollow point features Winchester's proprietary bonding process that welds the copper jacket to the lead core preventing separation and ensuring consistent expansion upon impact.Winchester PDX1 Defender 9mm 147 Grain Bonded JHP20 rounds per box 200 rounds per caseNickel-plated brass cases for enhanced reliabilityNon-corrosive Boxer primersMuzzle velocity: 1 000 fpsMuzzle energy: 326 ft-lbsFBI protocol testedSix-segment notched jacket designSubsonic performance ideal for suppressed firearmsDesigned specifically for personal defense and law enforcement applications this ammunition delivers deep penetration with massive energy transfer while maintaining up to 1.5 times expansion. The reduced muzzle flash and subsonic characteristics make it ideal for low-light defensive scenarios while the nickel-plated cases allow for easy chamber checks and smooth cycling.