CCI Ammunition TNT Green .22 Winchester Magnum Rimfire 30 Grain Hollow Point Brass Cased Rimfire Rifle Ammo 50 Rounds. If you can't find your ideal rimfire varmint load in CCI's catalog of products it doesn't exist. Specifications for CCI Ammunition TNT Green .22 Winchester Magnum Rimfire 30 Grain Hollow Point Brass Cased Rimfire Rifle Ammunition: Manufacturer: CCI Ammunition Caliber: .22 Winchester Magnum Rimfire Number of Rounds: 50 Bullet Type: Hollow Point (HP) Bullet Weight: 30 grain Cartridge Case Material: Brass Muzzle Velocity: 2050 ft/s Application: Varmint Package Type: Box Primer Style: Rimfire Package Contents: CCI Ammunition TNT Green .22 Winchester Magnum Rimfire 30 Grain Hollow Point Brass Cased Rimfire Rifle Ammunition What is CCI Ammunition TNT Green .22 Winchester Magnum Rimfire 30 Grain Hollow Point Brass Cased Rimfire Rifle Ammunition good for? The manufacturer thinks that it is best for varmint.CCI Ammunition 60: TNT Green .22 Winchester Magnum Rimfire 30 Grain Hollow Point Brass Cased Rimfire Rifle Ammo 50 Rounds