I've got two 260s, two 6.5 Swedes and one 6.5 Creedmoor. I could never decide between them so have them all.

I got some creedmoor brass from Midway and loaded some 129gr SSTs using the Superformance powder. I was quite impressed with the powder. It was very consistent in velocity with duplicates in each string and standard deviation in the four loads I tried went from 7 to a high of 13.
My Ruger Hawkeye has the 26" barrel and velocity was higher than the Hornady data with all loads. That, in my experience is quite unusual. At the max of 46.7grs my rifle got an avg. vel. of 2951fps & a .25" 3 shot group.
I am eager to find some time to re-test that load some more. I have never had velocity or accuracy of that level with any of my other 6.5s. Result of rifle or cartridge? At this point I can't say, but it sure is fun and should make a deer unhappy this fall.

"An open message for all Democrats; "Look you are nothing and your work is worthless. Anyone who chooses you is detestable."
Isaiah 41:24 (HCSB)