Remember the "temp insensitive" business is MOSTLY marketing.
Extruded powders can only be that way, when used in the application they are designed for; it is NOT a universal application. If they don't tell you what cartridge and bullet it was designed for, then you shouldn't believe the rest of the fluff.

2700/414/760(same powder) does work very well. RL-17 works very well, and Superformance is phenominal. Superformance in canister form, was designed around the 30-06, so not surprising it works with heavies in the Creed. That powder is temp stable with 140's, and is VERY progressive in burning curve, RL17 is somewhat progressive. So what that means with Supr, is that you can run about 50fps off max, but operate at 50,000 psi!! Pretty cool.