How old is your brass? Have you checked for case lengths if they have been fired a few times?
Also I gave up on CCI primers as I lost confidence in a load I'd used for years and a change of primer (to Remington) cured that. I also debur the inside and outside of the flash holes plus batch weigh my bullets.
I need to know what I aim at will be killed outright - not injured.
Pedantry to new depths........
If it flies, floats or fornicates, always rent it - it's cheaper in the long run. - Felix Dennis