I realized that my spreadsheets had an error where I was calculating target distances with the zoom sensitivity ratio relative to the 16:9 magnification instead of relative to the 4:3 magnification like CS:GO does. All three spreadsheets have been updated.
One consequence of this correction is that the Scoping and Scope 2x/4x/8x/15x sensitivities will now all be different values, even if you are using zoom_sensitivity_ratio_mouse 1, since PUBG's sensitivity scaling is relative to 16:9 instead of 4:3 like CS:GO.