I have never loaded .223 because I have had several thousand rounds of ammo. That's about all shot up now and it's time to reload. I have a Dillon 550 press, but I don't really enjoy loading rifle caliber on it, so I bought a Redding T-7 for $160. Now I need dies. The reason for my question is thatI ran into trouble using Lee dies on my Dillon years ago because Lees are so short. I read somewhere that the Lees are hard to use on a Hornady LNL Progressive also. Then I read that Lee has lengthened their dies. What dies are best? Do I need to use the Lyman M Die, Lee FCD, or Redding Profile, or just a set of any brand throughout the whole set? If one set, which brand? I ask this because I use a mix of dies on almost all my calibers. For example for .30-30, I use the Dillon sizing die, Lyman M Die, Hornady seater, and Lee FCD. After trying several ways of loading the .30-30 I found this setup make the best cartridges the fastest with the least mistakes. BTW, I know some people don't understand why some of us mix dies. No need to mention it because we have our reasons that vary according to caliber, etc. Thank you for any help you can be.