Chair gun is a standalone Airgun pellet Trajectory Calculator and much more, designed for air gun enthusiasts. With Chairgun 2 software one can calculate the trajectory of his air rifle by customizing the rifle settings and making use of the extensive pellet data base. Take a look at all software provided by Chairgun. Installing Chairgun is easy and it includes a comprehensive manual in the Help section.
Chairgun web page.
For further information you can also visit the Chairgun Blog site at :