The Burris setup is pretty neat, might cost some, but you'll save your time.
You should make DANG sure you have the correct bases, but because this is a Model 70, it might be the way the receiver was put together way back when. But if it's in fact correct, then ---
I would get out the calculator, center the scope adjustments, fire a round, measure THAT below point of aim, divide distance of shot by distance between rings, and that will give you a good number of how much you have to shave, shim, or both.
Then, after you've put the bases back down, you will pretty much have to lap the daylights out of the rings to keep the scope happy.
