HiBC, letting it go doesn't clarify any misunderstanding on both sides. As I read it, you are interpreting that I have a first focal plane, rather than a second focal plane, scope.
In FFP, the reticle enlarges as the magnification increases but the relationship to the impact point at any portion of the ballistic markings remains the same. In SFP, as you described, the relationship remains the same only if you use and maintain the maximum magnification of the scope. So if you sight in at 200 yards with the first dot below the crosshair at 9 power, then increase the magnification to 12 power and use the same first dot, the impact point will not be the same.
Now, maybe I have it wrong. Which is why you should not let it go.
In FFP, the reticle enlarges as the magnification increases but the relationship to the impact point at any portion of the ballistic markings remains the same. In SFP, as you described, the relationship remains the same only if you use and maintain the maximum magnification of the scope. So if you sight in at 200 yards with the first dot below the crosshair at 9 power, then increase the magnification to 12 power and use the same first dot, the impact point will not be the same.
Now, maybe I have it wrong. Which is why you should not let it go.