I followed this PDF on accurizing my 550.
Not seeing the pdf, but that's a good write up. I may try to clean up my small primer setup a touch when I finish cleaning out the reloading room. I've still got a lot of stuff to sort through.
...I do have a CPS. I got one when PR did a snipers hide special, and I use it for all my large rifle precision stuff, leaving the small rifle on the dillon. It's better than the dillon, but even in stock form the dillon primer only rarely gave me any issues. Unless you're super anal, you're not leaving too much on the table with the blue.