I found out that you can buy factory 2nds directly from the company with full warranty. There is no guarantee they will be offering what you want but who knows. There shipping is reasonable

goto the rcbs web site
http://www.rcbs.com/

go to the lowest left side and you will list of 2nds
just double click, you must call the order in

Be aware that their new carbide 3die pistol sets have a newly designed expander plug which limits the amount of belling you can put on your brass