Don`t know if others will offer dies but Hornady developed the cartridge and their dies are very good IMO. On par with RCBS and better then Lyman or Lee.
BTW I have the "old" Hornady smooth stemed sizers and never had the trouble others posted about with them. I`m sure they were honest problems, I just never experianced them. The dies I have in 260, 270, and 6.5x55 all load ammo as straight as or straighter then my RCBS and Reddings do, and the tapered expander drags noticable less. Plus the price was right when I bought them.
They have improved the expander stem and hopefully ended any problems there. I`ve no problem with recommending them if that is all you find in the cartridge you need.