I've only used lee. They work.
Auto
Rcbs here too.I've got an RCBS I can't complain about. It's stuffed a couple of k primers in shells - except for the large pistol into the small primer .45 ACP's. Only pistol rounds though.
Does the square tray work better?
Most of the round trays are big enough to dump a sleeve of primers in.Does the square tray work better?
If tray size is an issue I flip the primer package over and slowly slide the sleeve off with that row over the widest part of the tray.I've been filling the primer tray for my press by dumping primers into my hand first.