EddyBo, if you change the BC and then have to run a stepped BC you are barking up the wrong tree! Tight primer pockets along with a crono reading are at least 2 indicators that your velocity is on. You have already confirmed the BC in another rifle shooting at slower velocities.
With all the Data you have you have at least mathematically proved what it is not.
From a mathematical standpoint this is what I believe to be the missing equation. It is BULLET ARC! An easy mathematical test will confirm. Even though your rifle printed one in high at 100 yds this will not take into account the changed duration of Bullet Arc that occurs especially in a high BC bullet pushed at 3200. Not to mention the bullet Arc can respond differently in differing barrels.
Try changing the point of impact figure at 100 yds to 2" high and so on and see if your charts don't line up near perfect. If they do then you will have proven from a mathematical standpoint the missing equation. Less than 2 minutes on your computer will confirm.
Shod
