Dec 11, 2021 ยท 209 primers for muzzleloaders large rifle magnum primers cci 450 primers 1000 pieces federal #210 primers Box of 1500. federal #210 primers Box of 1500. The Remington Kleanbore 209 Muzzleloading Primers are designed to help you reduce chamber buildup in your black powder firearm. Kleanbore 209 primers, which are intended for use with black powder substitutes, provide more consistent and reliable ignition while allowing for 2 to 15 times the number of shots between cleanings. Packed 100 Per Box. "/>209 primers for muzzleloaders