The Velocity Drop Tool is to help you estimate the
drop in velocity for each grain of powder by
calculating the velocity loss to powder drop.
You can access it from the Calculators Menu in the
Main Menu or the List Menu.
To use this feature make sure you have a value in
the Muzzle Velocity input box on the Main Window
of Totally Ballistics.
Then you add your highest and lowest velocities
and charge weights from your reloading book for
your selected powder.
Click the Get Value button.
Input how many grains you would like to drop in the
corresponding text box.