Welcome to JBM Small Arms Ballistics. This site's includes online calculators, ballistics information and links to other ballistiics software. This site is divided into a number of main sections all available from the main menu at the top of every page.

The popular online calculators for BC measurement, trajectories, trajectory cards, maximum distance and a modified point mass program are available from the Calculations page.

This site is under constant development -- much of it driven by user input. If you have suggestions for this site, please use the contact page to drop me a note with your suggestion.