Rob,
I made up some "running in" rounds for mine using 140 grain Sierra Pro Hunters, Vit N160 and Remington primers. I used the starting load in the Vit tables (downloadable free on their website), Accuracy was superb, but I hope to work up a warmer load for it in the next few weeks.
I was advised to try some Vit N165. There is data for this powder in the Vit tables also.
What rifle are you getting?
Cheers,
Bob