I would love to see a temp stable IMR 7828.
I use IMR 7828 in my 280 Rem. I use 58.5 grs under a 154 gr SST bullet and it shoots the same at freezing as it does at 85-90 degrees. Temp sensitivity is not always cut and dry. It can change with different loads and bullet combo's. What can be issues with one load can be somewhat stable with another.