I've got a slick (adjustable) case derimming- jacket making tool but no time to put it into production right now, so no help yet.
What caliber once fired brass do swagers use? There's 22lr brass of course, and 9mm. Any others?
Also- here's another question for you swaging enthusiasts...
Here are prices for tubing from McMaster Carr:
http://www.mcmaster.com/#catalog/117/135/=dswyap
If you could easily cut accurate jackets on your own, would you be willing to make your own jackets at these material prices?