Winchester Super-X RIFLE .223 Remington 55 grain Jacketed Soft Point Brass Cased Centerfire Rifle Ammo 20 Rounds. Specifications for Winchester Super-X RIFLE .223 Remington 55 grain Jacketed Soft Point Brass Cased Centerfire Rifle Ammunition: Manufacturer: Winchester Caliber: .223 Remington Number of Rounds: 20 Bullet Type: Jacketed Soft Point (JSP) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3240 ft/s Muzzle Energy: 1282 ft-lbs Application: Varmint Package Type: Box Primer Style: Centerfire Lead Free: No Gun Type: Rifle Features of Winchester SUPER-X RIFLE .223 Remington 55 grain Jacketed Soft Point Brass Cased Centerfire Rifle Ammunition: Soft PointRapid explosive expansion Thin Wall JacketReduces engraving forces for improved accuracy Lead CoreSoft lead core for maximum fragmentation Package Contents: Winchester SUPER-X RIFLE .223 Remington 55 grain Jacketed Soft Point Brass Cased Centerfire Rifle Ammunition What is Winchester Super-X RIFLE .223 Remington 55 grain Jacketed Soft Point Brass Cased Centerfire Rifle Ammunition good for? The manufacturer thinks that it is suitable for varmint.Winchester SUPER-X RIFLE .223 Remington 55 grain Jacketed Soft Point Brass Cased Centerfire Rifle Ammo 20 Rounds X223R