CCI Small Pistol Magnum Primers -100 Count - CCI's primers are highly-evolved products because they continuously test and improve. Today's CCI primer is more sensitive, easier to seat, and more compatible with progressive and automated loading equipment than even before. CCI primers have always incorporated modern non-corrosive and non-mercuric initiator mixes. These small pistol magnum primers are for heavy loads using ball propellants. Safety Note: use Magnum primers only when specified in published load data.