Worth saving that page somewhere for reference.
However, 22LR (and a 12 ga slug) travels close to the speed of sound, where small changes in velocity give you big changes in drag:
Mach 1 is about 1086 fps, so the 22LR lives in the steepest part of the curve, where BC will seem to change with velocity. Many ballistic programs use a crude model for this curve, so you may have to take notes of what happens in the field (Data On Personal Equipment)to be sure.
A big list of velocities here.