Being consistent is very important no matter what you are shooting
I find that most of my fliers are caused by me. I try to free recoil when I can to avoid these problems. It does not simulate field conditions, but gives a more reliable reading of the loads being developed. After I have developed a good load, then I grab the stock and fore end to simulate field conditions as close as possible. I then re zero and see what I can do
On good days I can do very well, on bad days; well there are bad days