I have four 270 Winchester caliber rifles. One I use exclusively for cast bullets, but the other 3, I use for jacketed bullets. I own 1 set of RCBS reloading dies for this caliber. Thats all I have ever needed. Yea, I have to adjust the seating die for different bullets/loads, but it really isnt much of a problem for me. Since none are bench rest style rifles and accuracy is in the M.O.A. range for all, I really think that extra dies would be an expense I really dont need. Good-luck with your venture
BCB