Originally Posted by 1100 Remington Man
Thanks for The info. I'm looking for 20 MOA is it better just to put in a 20 MOA or go the + 10 on rear ring & - 10 on front ?Thanks. I trying not to change base because its a Pre war Model 70 & I had it drilled by gunsmith one hole in rear since it was not drilled & tapped & I have no Idea what base is on it, I would guess Model 70 post war long action.
Be aware that the insert offset values are not in units of MOA, but in thousands of inches. If the separation between rings is 5", an 0.020" offset in one ring produces a 13.7 MOA elevation change. If you want 20 MOA, you may want to use a 0.020" offset in one ring, and an 0.010" in the other (20.6 MOA for 5" ring separation).
In my experience, It makes very little difference whether you go with one 0.020" offset, or +0.010 and -0.010 in different rings.