I doubt that caused your misfires. Maybe they were not fully seated or contaminated.
First trigger pull left a strong indentation in the primer, but no ingnition. In all cases but 1, the second firing caused ignition. 1 round was fired 4 times with no ignition. I am going to pull the bullet. I did have several that fired on the first time as well.
That sounds like primers not properly seated.
I reseat the primers on a box and see if the results were different.
Keep in mind, CCI primers cups are probably the hardest made in the US. Some S&B are harder. So if you have any mechanical issues in your firearms ignition systems this primer choice will make them more apparent. Federal and Winchester primers tend to be softer. Often the change in brands will mask the underlying problem and the gun will go bang again.
