I've had good luck with RL17 overall, but have noticed some loads that have no pressure at 50-60F may have pressure signs at 80F+ temperatures. I imagine this is not exclusive to RL17, but is something I observed. No clue on the sensitivity to cold, as we don't get much cold below 30F here.
I found Re17 to be too persnickety for North Texas. I might shoot hogs in temps as high as 90 or 95 at night and well over 100 degrees in the daytime, or it could be in the 30s or even the 20s or even colder than that some times of the year. It's too easy to just choose another powder that won't misbehave like Re17 can.
