I have a set in 30-06 and I need a new decapper/expander plug.

Are these dies still made or is there a site that sells replacement parts?

Hornady bought Pacific, and they might have parts left. I have a set of Durachromes in .35 Remington and they're the best dies I have. The phone works the best for dealing with Hornady.
http://www.hornady.com/

Bye
Jack