IMR 3031 0.284" 2.800" 38.0 2,633 42,000 CUP 40.3 2,797 49,900

This Hodgdons data for 139 Hornady. Have not used this powder in the 7-08 but should work well.
I have used 3031 for light loads in a 30-06 with 150s.