Thank you for the detailed response. I am not particularly interested in the increased velocity, I recognize that those gains are pretty trivial.
I did want to know how to extrapolate when pressure tested book data cannot be found for the powder you want to use or have on hand. Both Sierra and Nosler have good manuals with respect to the AI rounds I am loading for, but the powders they choose to publish are not as complete as those listed for the parent rounds.
