Another Dillon fan here. Superb products and the best customer service in the industry, a hard combination to beat. As far as David Tubb using progressives to load his match ammo, I assure you, he does. Not exactly an out-of-the-box set up, though. David's an inveterate tinkerer, and tends to modify everything to suit his needs. His progressive presses are no exception. He was (and probably still is) using a Prometheus system on his RL550, meaning that all the charges were weighed on a lab-grade scale and trickled to the tenth, precisely. Not too bad for a progressive press!
Even using a "stock" press, they're capable of turning out some veery good quality ammo. Dillon also makes an adapter that allows the use of other powder measures, since theirs admittedly has some issues with some extruded tubular powders. I don't want to have my powder selection dictated to me by what a measure will or will not function with, thank you very much. I use an old RL 450 for virtually all my short range ammo, but that's with Redding seating dies (on brass that has been sized and inspected in a separate operation) and fitted with a Redding BR-30 measure using one of Dillons adapters. Not exactly what most would think of as a true "progressive" but I still get a bit anal about some operations. Hey, we all modify our procedures and our equipment to suit our particular needs, don't we?
Kevin Thomas
Berger Bullets