Actually, wind drift is exponential with distance in a constant wind.
Here's the calculation of a standard velocity .22 long rifle bullet in a 10 mph cross wind.
25 yards 0.3 inches
50 yards 1.3 inches
100 yards 5.1 inches
200 yards 19 inches
It's linear to wind strength, exponential to distance.
I agree - that's what my programs indicate.