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. This primer is compatible with small pistols calibers like 30 Luger, 30 Mauser, 32 ACP and many more.