CCI Ammunition Maxi-Mag .22 Winchester Magnum 40 Grain JHP Brass Rimfire Ammo 200 Rounds. Specifications for CCI Ammunition Maxi-Mag .22 Winchester Magnum 40 Grain JHP Brass Rimfire Ammunition: Manufacturer: CCI Ammunition Caliber: .22 Winchester Magnum Rimfire Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 40 grain Cartridge Case Material: Brass Muzzle Velocity: 1875 ft/s Application: Varmint Primer Style: Rimfire Features of CCI Ammunition Maxi-Mag .22 WMR 40gr. JHP Rimfire Ammo - 50 Rounds Clean-burning propellants CCI priming High velocities Maximum energy transfer on impact Package Contents: CCI Ammunition Maxi-Mag .22 Winchester Magnum Rimfire 40 grain Jacketed Hollow Point Rimfire Ammunition What is CCI Ammunition Maxi-Mag .22 Winchester Magnum 40 Grain JHP Brass Rimfire Ammunition good for? The manufacturer says that it is suitable for varmint.CCI Ammunition 958: Maxi-Mag .22 Winchester Magnum 40 Grain JHP Brass Rimfire Ammo 200 Rounds