I recommend that you start by establishing the seating depth that shoots most accurately using the procedure outlined on the Berger website:
Once the preferred seating depth is established, begin your powder charge workup using the OCW procedure outlined here:
Hodgdon shows a starting load of 55 grains with H1000.
I don't know what to expect in terms of velocity. I just started load workup for my .264WM. I am working up loads for two different bullets and have only completed the seating depth tests for one of them. When I get the chance, I will complete my OCW workup with Retumbo. I am hoping for 3150ish w/140g bullets when all is said and done, but I don't know if that is realistic or not.
Good luck with your load development!