So, after doing the load testing with my rifle, and the results were pretty good. However, I am wondering, since I had been using used brass, if I might have been seeing pressure signs that were from older load testing. Because of this, I am going to do another test, see if the max load is where I think it is, with new brass. So, after a long introduction, it's Northern Minnesota and winter....the temps are only reaching the mid 20s and I am concerned that I might not get valid results because of the temp. I have a string of 10 different loads to try. Is it worth it go go and load, or is it too cold?