I have a loadmaster and I reload 45 ACP. Now maybe it's different because I'm using large primers, but I never have a problem with priming. I also use the bullet feeder. I can do a full run of 100 before having to stop and add more shells and bullets. That's about as many as my arm can take at once, plus it fills up my loaded round catcher.
It's true, you need to take some time to get it setup correctly. This can drive you a little nutty, but once you get it and understand where the adjustments are, it runs like a champ. I would never spent twice as much to get a dillon.
Frank