My process relies heavily on the Berger method.
https://bergerbullets.com/getting-the-best-precision-and-accuracy-from-vld-bullets-in-your-rifle/I find a powder (okay, I use Big Game exclusively for the 7mm-08 but it looks better if I say I try different powders) that gives me the velocity I’m looking for without a compressed load.
Then I determine the distance to the lands OR max magazine length. From this point I apply the Berger method from the link.
I’ve used this method many times with several bullet types, most recently with my brother’s 6.5 PRC. It hasn’t failed me.
P