CCI makes two shotshell primers to cover your needs. CCI 209 primers are for field and target loads in all gauges. This primer is a general purpose shotshell primer for most field and target loads. The CCI 209M ( item CC0009) 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. Clean-burning and reliable ignition CCI 209: field and target loads ( Item CC0008) CCI 209M: heavy waterfowl and turkey loads ( Item CC0009)