Primer failure

[BLK]

I bought a 50 count box of nosler brass. Select, weighed, trimmed, and tapered at neck. Never have had a primer failure before this. They were installed by a Lyman primer tool and went in quite hard on each case. Had two failures on first 20 rounds. Never had a failure before loading once fired remington, wihchester, or federal brass. They were cci BR2 primers in the 243 nosler unfired brass.

 

[many shots]

I was having similar problems with my new rifle that I had built. During Load development the rifle functioned flawlesly. Then while out shooting I had a FTF and also a pierced primer. Took rifle in to have it gone over and everything appeared ok so thought it was an issue of overpressuring. Decreased the load but still had FTF's. When I took the rifle back in we had decided that a heavier spring might be needed. I had installed an aftermarket firing pin assembly already. When we went to change out the spring it was discovered that the existing spring was for a short action assembly. Installed new long action spring and problems have since gone away.

 

[XWrangler]

I had the same problem with some CCI 200 a few years ago. My brother and I had just bought 5000 each and we each had 6 or 7 misfires in the first 1000 rounds we fired. I have not purchased a CCI primer since. I have used up alot of CCI pistol primers since with no problems but just could not bring myself to buying CCI again.
I use nothing but Federal and Remington now and have never had a misfire.
I know CCI is a great company and I am not trying to knock them but I know others that have had the same problem.
I have went through over 30K Rems and Feds since the CCI mishap and have not seen a misfire.
I wondered if a bad batch comes along once in a while like anything else. Maybe they were made on a Friday!! LOL!
Who knows. If sure would be interesting to know the answer.