The Drag Analyzer
tool that lets you see bullet drag.
Shooter are being offered more and more G7 ballistic
coefficients and custom drag functions, as well as multiple (stepped)
BC values, but how do these compare? Unlike classic drag coefficient
graphs, the Drag Analyzers shows you actual bullet drag versus
velocity, and not just that of the drag function, but also that
of the BC itself along with air density, speed of sound, head
and tail winds. You get the full picture for the velocity range
and conditions you select.
At a glance you are able to see how various drag
functions differ, and in the case of custom and stepped BC values,
which standard function they most closely match. In the example
above you can see how the BC steps for the Sierra MK bullet correct
G1 to better follow G7. In your own shooting you might find the
easily caclulated G7 equivalent BC better matches your drop observations.