If it is inverse temp sensitive, I couldn't tell by feel of shooting. I went up to 5.9gr (max is 6.1) and it didn't really feel any different than the lower loads, and it was a balmy 20 degrees when I was shooting late Sunday afternoon... So I'm hoping it's not too temp sensitive.

I probably won't work up any .45 loads until sometime January. But if I remember, I'll let you know my results.

I'll probably do some .357 mag loads soon, though.