I have a 7mm-375Ruger and 200 hydro formed brass. I worked up a great load with the raw brass, but when I went to use the fire formed brass the load went south. I'm trying not to use up a bunch of H1000 and my 180VLD's just to get the brass final formed for my chamber. It appears that the brass needs to grow about .006" in length from rim to shoulder. What's the best way to do this?