cci 450 primers 1000. The CCI 450 Small Rifle Primers is a pack of 1000 percussion caps used to reload magnum small rifle cartridges. Magnum primers are intended for large-capacity cases, very low temperatures and/or ball propellants. CCI primers utilise non-corrosive and non-mercuric initiator mixes selected for their clean burning characteristics. All CCI primers have a larger anvil area to compensate for firearms that may have an off-centre firing pin and are engineered to enable smooth feeding in automated reloading equipment  cci 450 primers for sale.