RangeTracker is a community-based web application which brings together target shooters from around the world in a friendly competition of best shots and tightest groups. Using a specialized algorithm, RangeTracker simply requires a user to submit a digital image of a paper target in order to calculate meaningful bullet group statistics. These statistics can be compared to other targets, allowing a shooter to monitor personal skill level or join in a competitive scoreboard of 2 or more other shooters.