I am looking into buying a case annealing machine and will be happy if it "just" extends case life....but the question I have is: if done properly will it aid in accuracy? Has anyone tested the process to see if there is a measurable change or delta in the ES? I recognize there are a great deal of variables to be considered but wonder what others have found in this area. My initial thought is to number about 25 cases, anneal prior to each load, and record the velocities over a number of identical trial loads to see how much they very.