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Modern military practice in regards to riflemanship hinges on repetitive drill in a few standard firing modes, until the rank and file learns an intuitive feel for projectile behavior, i.e. deviation from path, altitude loss over distance etc. In this manner, it is hoped that soldiers who need to return fire do so instinctively, in reaction to the external world, no different than one learns to expect an oncoming cars behavior in an intersection. 50 meters is determined to be the maximum effective range of a soldier armed with a M16-family assault rifle, assisted only with iron site (no magnification or focal point).   This project examines the relationship between a subject's experience with firing projectiles, and their shooting accuracy. Shooting accuracy here is defined as a function of the spread of a burst of five rounds (i.e. the distance of each shot from the center of the target), the distance from shooter to target, and the time required to fire five rounds.Data Collection:   Apparatus: The construction of this experiment involves a Tippmann X7 paintball marker, 1000 paintballs, 3 pressurized air tanks, a target constructed from wood and spray-paint, a stopwatch, a tape measure, a meter stick, some chalk and an unobstructed range of 50m in length.  Sample Population:  30 participants were randomly selected such that 15 were male, and 15 female. The number of subjects was chosen so that a normal distribution can be validly assumed. The participants were all university students between the ages of 18 and 22.