bonesarelli:

You are going to have to find your own sweet spot. I would start at the bullet or powder manufactors C.O.A.L., and work up in .005" incements. Keep on going till you obtain the best groups. Lets say your best group occursis at .015". drop in .001 increments, and advance in .001 increments. You will find exactly your sweet spot for that bullet. I know it is a tedious system, but make sure you start withMIN load every time you change components ordimensions. Good luck.