Old primers

They will be very bad and dangerous, you should send them to me immediately for proper safe disposal.

More realistically, if they have been stored in a cool-dry location they will work just fine. The enemy of primers (and ammo in general) is elevated temperatures and/or high humidity environments.

They are good. As a side note I very seldom use magnum primers but they will work just follow data.

I just got back from the range testing some old CCI primers a friend gave to me. (The large rifle primers are really old, 70’s maybe?).
I fired 20 rounds of each in a Stag Model 6 5.56 and a PA-10 in .308 Win and they ran fine with same accuracy as my current stock of primers.

The cci 400's are not the best for 223 ar's. The primer is a little thinner than the mag primers (450) which are more common on 223 loads. I have some 400's that I use in bolt action loads.

Cool boxes though for the shelf.

ericuda said:

The cci 400's are not the best for 223 ar's. The primer is a little thinner than the mag primers (450) which are more common on 223 loads. I have some 400's that I use in bolt action loads.

Cool boxes though for the shelf.

Click to expand...

I don’t use the CCI-400’s for 5.56 pressure loads in AR’s, but for milder .223 plinking loads, they have been fine in my experience. I plan to run the in my bolt action .223’s. Thought the AR would be a good test for them. I have a few thousand Remington 7 1/2 and Wolf .223 for higher pressure loads for the AR’s.

Ya might want to check for any recalls on primers going back 20 years.