CCI 500 Primers For Sale. CCI is a brand of ammunition and shooting supplies produced by the CCI (Cascade Cartridge Inc.) division of Vista Outdoor Inc. CCI primers are a type of primer used in reloading and ammunition manufacturing. They are known for their consistent ignition performance and reliability in a variety of shooting applications. CCI offers a range of primers for different types of firearms, including pistol, rifle, and shotshell, as well as different sizes and types of primer, such as standard, magnum, and benchrest. CCI Primers For Sale. CCI primers are widely used by shooters, reloaders, and ammunition manufacturers due to their quality and consistency. CCI also offers primers specifically designed for use with certain types of powder, such as their Clean-Burning primers, which are designed to minimize residue buildup in firearms.