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221 fireball Rifle Ammunition ammo for sale!
221 Fireball, is a centerfire cartridge created by Remington Arms Company in 1963 as a special round for use in their experimental single-shot bolt-action pistol, the XP-100. A shortened version of the . 222 Remington, it is popular as a varmint and small predator round while also finding use among target shooters.
