CCI« SHOTSHELL PRIMERS. We make two shotshell primers to cover your needs. CCI 209 primers are for field and target loads in all gauges. The CCI 209M is a true Magnum primer designed for heavy charges of slow-burning propellants. That makes the 209M a superb choice for waterfowl loads. Both use modern, non-corrosive, non-mercuric primer compounds for clean, sure ignition.