X-Treme Bullets 9mm Luger 124 Grain Hollow Point Pistol Ammo 100 Rounds. The X-DEF projectile features penetration of 12-18 in Clear Ballistic Gelatin. With at least 99percent weight retention X-DEF is one of the best performing personal defense projectiles available today. Specifications for X-Treme Bullets Pistol Bullets 9mm Luger 124 Grain Hollow XDEF Point: Manufacturer: X-Treme Bullets Gun Type: Pistol Bullet Type: Hollow Point (HP) Caliber: 9mm Luger Cartridge Type: Brass Bullet Weight: 124 grain Quantity: 100 Diameter: 0.355 in Core Material: Lead Jacket Material: Copper Projectile Caliber: .355 Caliber Bullet Quantity: 100 Bullet Package Contents: X-Treme Bullets Pistol Bullets 9mm Luger 124 Grain Hollow XDEF Point X-Treme Bullets XB9XD124B100: 9mm Luger 124 Grain Hollow Point Pistol Ammo 100 Rounds