I'm gonna spring for one of your presses one of these days. I think you are a clown and my last login from years ago was banned because of an argument with your hard headed self, but I do respect your work.
I cannot imagine needing a progressive or 550 for the linebaugh. I shoot a .475 on the regular and load on a single stage. They shoot like a rifle out of my BFR and I cant imagine needing anything else for them. A range session of 50 rounds is a workout.