Hold Under in inches for Angled Shots
Range/Deg 10 20 30 40
(Yard)
10 0.00 0.01 0.03 0.05
15 0.01 0.03 0.07 0.12
20 0.01 0.06 0.12 0.10
25 0.03 0.10 0.20 0.47
30 0.03 0.13 0.28 0.50
35 0.05 0.18 0.39 0.69
40 0.06 0.23 0.52 0.90
45 0.08 0.30 0.66 1.16
50 0.09 0.37 0.83 1.45
55 0.12 0.46 1.02 1.78
 
Bold numbers indicate where the error is greater than one pellet's diameter and one should compensate by hold under or clicking down.

This reduces to the Airgunner's Rule: If the angle is less than 20 degrees or the distance less than 20 yards, shoot for the center. Otherwise, aim for the bottom of the kill zone.

The above was based on shooting JSB Exact Heavy pellets at 890fps. The numbers change only slightly when computing for most typical field target pellets and velocities.