I picked up a 650 about a month ago configured for 9mm. I bought a .45 ACP caliber conversion for it two weeks ago but opted to use my 30 year old carbide die set. (I still have all of my single stage press equipment.)
This past weekend, I swung by Dillon and picked up a set of their .45 dies....which are notably longer than mine. I didn't like the lock ring holding on by just a quarter thread on the 1st station when I had my old die in the tool head. The Dillon dies do fit and set up easier than their Lyman equivalent.
Changing primer systems is a bit of a hassle. I can see that I'll be planning future reloading sessions more carefully to minimize this.