Free: Contests & Raffles.
CCI's are known for having hardest primer cup. Personally, I'd really take a look at the rifle/bolt/firing pin to make sure there isn't some gunk in there. Maybe polish the pin and use a thinner lubricant in the firing pin channel. I would also take a look at my reloading process, as a primer that is not seated deep in the cartridge primer pocket may absorb some of the inertia of the firing pin strike. If you use a progressive press with a set depth for primer insert, you might adjust that to make them seat deeper. The one that didn't fire; Take it apart and see if the primer pocket is dirty or malformed. Are you loading all the same type/brand of brass in a batch? There are many reasons why a primer may not have fired. CCI's have functioned flawlesly for me for near 30 years. I regard them as very reliable primers. Federals are considered the softest and maybe the largest in diameter. Remingtons are hard too. I've probably seen more misfires of Remington reloads than any in all my time at the gun range. I don't use them. -Steve
My nephew pulled up on a buck last fall and had a factory Remington Corelokt fail to fire. He cycled the bolt and still got the buck. He still has the cartridge. I should pull it to see if the primer has any compound in it. -Steve