Some first hand experience:
Cracks and/or sharp folds, not dents but folds, in the shoulder of new cases.
Improper annealing, leading to neck cracks after one or two reloadings.
Slag in the brass material itself, like a bullet cast from dirty metal not fluxed and skimmed.
Primer pockets well out of spec for depth and/or excessive radius between the bottom and side walls of the pocket.
Flash holes well off center and/or punched through at odd angles with excessive burrs inside the case.
New case mouths far out of square.
Between their sloppy QC on brass and producing batches and batches of primers that pierce too easily and have to be returned, Winchester (Olin) is really shooting themselves in both feet.
I wonder if they're using a BACO Model 70 for that?
