Actually I was of the same thought until I tried it. It’s not hard. Even the older equipment from the 60s all the way open to modern, have built in features to help with all that. Trimmers have length stops, primer seating tools have centering cups, cleaning is easy. Like I said, I’ve done it since 2011, it’s pretty simple. And I’ve never had any issues and trust me, if anyone is gonna have any issues, it’s going to be me haha