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. CCI recommends a minimum internal diameter of 0.050 inch for nipples used without powder charges and bullets. Thoroughly clean nipples and the flame path during firing sessions and always wear approved shooting glasses when firing any muzzleloading firearm.