Let's be perfectly clear: This Winchester 9mm Ammo is not military surplus ammunition. Despite what its drab, military-style packaging suggests, Winchester intentionally manufactured it for the commercial market.Winchester Service Grade ammo isn't designated as +P; this round generates significantly higher chamber pressure than SAAMI's standard specs specify. As such, it is not intended for antique firearms.This round's 1,320 fps muzzle velocity is around 170 fps faster than the usual 9mm 115-grain loads. As such, you're definitely going to notice more recoil. You're also going to fire a flatter trajectory as well as hit your target with a bit more striking energy than normal. The bullet's flat nose helps a lot if you're trying to cut the cleanest possible holes through a bullseye - the best way to tell how effectively your're grouping your shots.Winchester seats this ammo's nonmagnetic bullets in brand new brass cases, with clean-burning powder and noncorrosive Boxer primers that'll help any pistol exhibit its most reliable performance.500 Round CaseFeatures and Specifications of Winchester 9mm Ammo: Manufacturer Number: SG9W50 Caliber: 9mm Luger Bullet Weight: 115 Grains Bullet Type: Full Metal Jacket Flat Nose Muzzle Velocity: 1320 fps Muzzle Energy: 445 ft/lbs Reloadable Brass Case 500 RoundsAR15Discounts.com is your source for bulk wholesale 9mm Ammo.