This graph was produced for SH by Kombayotch.
Kombayotch, now a moderator of Canadian gunnutz, has replicated Hodgdon claims of temperature stability by taking a freezer and an oven to the range.
He heated and cooled the ammo and then measured the velocity of cold and hot ammo.
I can work up to and get 3228 fps 130 gr 22" barrel 270 with long brass life by using Re17.
I would have bet big money that was not possible.
1) But the temperature variations in Re17 would require such a big safety margin that I would be back down to the performance of many other powders.
2) Further, the temp variations are not good for first shots at long range [hunting, not targets with spotters].
Right now I am a big fan of H4350, because of temp stability.