From The American Prospect:

At a glance, Americans appear to have a variety of ammunition companies to choose from: Remington, Winchester, Speer, CCI (Cascade Cartridge, Inc.), Federal Premium. Winchester bills itself as “The American Legend” and has been in business for over 150 years, while Remington has been making guns and ammo for over 200 years and states that their company is as “boundless as the American spirit.” These companies associate their brands with freedom, independence, and toughness. What most customers do not know, however, is that they are all owned by the same two entities: Olin Corporation and Vista Outdoor.