I have an older dillon powder measure on my 550b and while I check it every 10 or 20 rounds, it throws with very good onsistancy. The rest of the press works well, though sometimes I get the primers goofed up--my fault.
It's the habit of Pulling, then Pushing, that took me awhile to master. Nothing worse than not Pushing the lever forward to seat a primer, and then leaking powder as it goes from around from station to station. I don't recommend seating the primer, with powder in the case.
I've looked at a good friends new Hornady, and I'll stay with the Dillon