So I am going to do a ladder test with my rifle this coming weekend. I am doing 3 sets of 10 in increments of .3 grains difference at 300 yards. The vast majority of the time I fire from the prone position. Should I conduct this test from a bench rest to ensure the result have the least amount of human factor involved? Or should I fire from the prone like I normally do so that the results dont change when my position does? I am worried that the barrel harmonics might be different when I go to the prone position. Thanks for any help fellas.