Buy CCI Small Pistol Primers #500 Online. CCI Primers undergo ongoing testing and enhancement. Consequently, CCI primers of today are more sensitive, simpler to seat, and compatible with progressive and automated loading equipment than ever before. Modern non-corrosive and mercury-free initiator mixtures are used for the cleanest possible burn. These are the most usually called-for primers in reloading recipes, the “bread and butter” of the reloading industry. Standard primers from CCI burn very cleanly, leaving primer pockets cleaner and lengthening the duration between cleanings. This is a tremendous advantage for progressive reloaders. They are designed for smooth feeding in automated equipment and are more sensitive and simpler to seat than earlier CCI primers. Available in boxes of 1000 or 5000 units.