How hot your running your load may have some bearing on temperature stability. Or at least that was the conclusion that I came to when I tried a bit of the freezer testing. I found that the same gun with different loads of the same powder and different bullets lost velocity differently. I wish it was as simple as "X powder loses 4fps for every 10 degree temperature drop." Unfortunately, I do not think it is that simple.
Last edited by EddyBo; 10/19/11.
