On the store shelf, in the trash or recalled. Glad I have a good bullet puller.

we are all glad you have a good bullet puller.

What the heck is this all about? In reference to WHAT?

I loaded about 300 223's and had around a 50% misfire rate with CCI primers. It's not the gun, I have some loaded with Winchester primers and don't have any problems. I'm glad I upgraded from my hammer type puller and went to the collet type. I saved my bullets anyway.

I wonder what the culprit could be? Over the last 4+ decades I have shot tens (hundreds?) of thousands of CCI primers without any sort of failure. My very favorite primers for my varmint rifles are the CCI BR2 and BR4 benchrest ones. A few years ago I bought some 1960's made CCI primers ($10 a brick! You blame me?) and not a single failure. If the only brand of caps available were CCI's that would be OK with me.

If you had a 50% failure rate, its not the primers...

I've used a variety of CCI primers over the years, for many types of shooting events and never had a problem...I would suggest that someone stored them improperly along the way, or they were subjected to serious contamination at some point...

I read a series of tests to degrade a variety of primers and the tests tended to blow up many misconceptions about what really damages primers..Even to the point of soaking them in penetrating oil for 24 hours and they still fired...

This....

We had another 223 there also and they wouldn't shoot in it either. I was using a new can of power pro varmint. Something to try with Winchesters I guess.

What guns ?

All the brass sized the same ? Was wondering if shoulders are pushed back to far ?

All the brass is trimmed within a thousandth or less. Probably the 3rd loading but the brass is in good shape. The primers are dented good, just don't fire.

Are the primers new/old, all the same lot number?. Do you have a headspace comparator? I'd be curious if there was a difference between the ones with cci and Winchester primers. You could try carefully popping the "dud" primers out with a universal decaper, replace with the Winchester primers and retry? I've never had issues with any brand of primer.

if you have a bunch of those worthless cci primers left i will pay the shipping to get them to me.

If you want them their yours. I bought a 1000 large at the same time and have shot some with no problems yet. PM me your address and you can have 5 or 6 hundred.