How temperature sensitive are these slow burning powders like Magnum, RL-33, etc...?
I'm not so worried about high temps, but I'm typically hunting in temps 60-70 degrees cooler than when I do load development in the summer. Anyone have experience on velocity lost from say 80F-20F in a big case like this?
I don't have anything to base it on, but intuition tells me that the condition would be worse in a smaller bore.
