Cor Bon 9mm 125 Grain Jacketed Hollow Point Brass Cased Pistol Ammo 20 Rounds. Energy developed at the muzzle must be transferred or "dumped" into the target to be effective. Energy transfer is aided by bullet expansion. The higher the velocity the more rapidly the expansion the more effectively the energy is expended into the target. This explosive expansion dumps the available energy quickly creating tremendous shocking power and causes immediate STOPPING POWER Stopping Power means SAFETY Don't be misguided by those who claim that their products have some magical or mystical performance advantage or that they can make a reduced power load with increased performance. We believe it isn't possible Jacketed Hollow Points are made with a gilding metal jacket and a soft lead core. The jacket is specially scored inside and out to ensure uniform and rapid expansion. Traditional hollow point bullet are economically priced and can be used to test the reliability of a handgun. Experts recommend that you fire at least 200 hundred rounds of your carry load to make sure it will function every time when you need it. This bullet mushrooms in the traditional sense to typically double diameter. The jacket and lead peel back to the bullet base. Specifications for Cor Bon 9mm 125 Grain Jacketed Hollow Point Brass Cased Pistol Ammunition: Manufacturer: Cor Bon Caliber: 9mm Luger Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 125 grain Cartridge Case Material: Brass Muzzle Velocity: 1250 ft/s Application: Self-Defense Package Type: Box Primer Style: Centerfire Dimensions: 1.40 X 2.30 X 2.85 in Package Contents: Cor Bon 9mm 125 Grain Jacketed Hollow Point Brass Cased Pistol Ammunition Cor Bon SD09125/20: 9mm 125 Grain Jacketed Hollow Point Brass Cased Pistol Ammo 20 Rounds