CCI made the muzzleloading world a lot brighter in 1975 when they introduced their #11 percussion caps. Why? They were non-mercuric, non-corrosive, and darned reliable. CCIA(R) Percussion Caps provide the reliable, consistent ignition blackpowder shooters need. They feature non-corrosive, non-mercuric priming compounds with soft, ribbed copper cups. When using any percussion caps for reenactment or demonstration shooting without a powder charge or bullet, only use nipples with a large internal diameter. Standard nipples intended for normal loads can clog when fired repeatedly without a powder charge, potentially causing the cap to fragment. We recommend a minimum internal diameter o Mfg: Cci
