Processing brass before loading, size, deprime, and trim, clean then set up to load.Are you processing your brass before you load or during the 8 station turn? If so, how/where do you trim, chamfer and deburr?
What/who's resizing die are you using? As others have mentioned, an SB die set is near critical when processing brass that's to be used in autoloading rifles.
Are you crimping after seating the bullet? Do you have a Lyman case gauge? Dillon case gauges are WAY too generous in my opinion. Lyman is much tighter.
Lee dies.
Crimping, then checking on a Dillon case gauge.