John, I'm sure you're going to respond to this OP question so when you do, please let me know if I am remembering correctly that due to lot-to-lot variations in Varget, you have sometimes needed up to 2 grains above the well known 60.5/250 AB load to hit the 2650 FPS the original lot produced?
My couple lots of Varget appear to be more representative of the slower ones you used that needed a bit more to hit "the number."

Merry Christmas to you and Eileen. Hope you're having a wonderful Eve.

Rex