Guys new to te reloading and picked up a Hornady Ap, started assembling it and noticed it didn't come with any shell plates? Are they all compatable with one another or do I have to look for Hornady ones? If someone could guide me to a place here on the site so I can pick up a couple! Last question is it seem that you need a different shell plate for different calibers... 9mm and 40cal need there own and of course 223! "Right?"