Oregon 700,
Your 168gr load at 2,860ft/s is not "hot". I can get 168gr SMKs almost that fast from an M1A...a .308 semi-auto.
If you want to stick with your 168SMK load, you are at least 1.0-1.5gr below your high node (high velocity with accuracy).
With a 30-06, you should be able to get...