Windstalker...
I am gonna play with that too, but in reality, each gun is unique to my experience. My guns...if you have a bullet that groups ok, you find a powder and charge behind it to tighten it up. For example: my 300WinMag...Shooting 180 Horndady's at @3150 fps...will group better shooting the same bullet at the same velocity from the same case, same seating depth, and same primer using R-19 versus R-22 or R-25. Why? I dont know, but it does.
