I have also heard that CCI primers are harder in nature and am just as curious as Major is concerning the CCI rim-fires. To my (brain cells dying by the day) memory....I have never had a CCI rim-fire misfire.

Anyway...I have no idea how the commercial ammo I shoot is primed, except like mentioned above....if the ammo-maker also makes primers as well, that's likely how they are primed. I just steer clear of CCI primers. Shooting a 9# Wolff hammer over a 13# Wolff rebound and stock firing-pin....no FTF that I recall. I strictly shoot the small pistol Federal and Remington in my 38-special reloads.