Oh, yeah...I remember that thread now. Thanks for finding it.
I spent a few minutes yacking with a ballistic tech at Western Powders one day eight or nine years ago. What he told me about temperature sensitivity was that a powder may appear to be very stable in one cartridge across the temperature spectrum, but not so much in another one. Just something to ponder.
I have decided to just abandon Re17, which I once swore off for erratic behavior but relented and decided to try it in .30-06 with 180 Partitions. The velocity potential is most impressive, but a load developed in 40-degree weather might be all over the place in 80-degree weather. Initial trials with IMR4955 and IMR4451 were not encouraging at all, and I've finally found some H4350---which I would have used from day one had I been able to find any.
God I am hating caliber threads more and more