Try Midway or Huntingtons. This is the 7 x 61 S&H Super (parent catridge), Norma brass & is what's available today. Not cheap anymore. But the Norma brass & the 40 deg. shoulder on the super cartridge should give good brass life. The 6.5 mm & 7mm are very close in size, just light lube the up near the shoulder & neck, then full length size it in the 6.5x61 die (make two or three partial sizing passes, not all at once). and after a fire forming first round, you'll have your case.
The 7mm rem case resizing needs the forming dies to get a 7x61 S&H case then sizing again, as per above. Midway lists the forming dies as well.