You will need about 28-30 MOA of UP elevation to shoot to !K on a cold day at sea level. You can use JBM
JBM - Calculations - Trajectory
You need to remember two things:
1. Without a slanted base or Burris Signature rings with inserts only about half of the available elevation is UP. The other half is down. So you would be well advised to use a 20 MOA base.
2. Despite your belief that you are fixing to win the Powerball lottery and that the top of your rifle receiver is flat; the real truth is neither of these things are very likely to be. So do not be surprised when you find that the receiver has some slant one way or the other.