The International Defensive Pistol Association (IDPA), founded in 1996, is an organization based in Bogata, Texas, that has created a shooting sport based on defensive pistol techniques, using equipment including full-charge service ammunition to solve simulated "real world" self-defense scenarios. Shooters competing in defensive pistol events are required to use practical handguns and holsters that are deemed suitable for self-defense use and concealment garment that can conceal the handgun from view of bystanders. The sport came about as a response to the perceived shortcomings in competitions organized by the United States Practical Shooting Association (USPSA) and its migration away from the use of common, un-customized handguns. It was decided by the founders of IDPA (Bill Wilson, John Sayle, Ken Hackathorn, Dick Thomas, Walt Rauch and Larry Vickers), that USPSA competitions had become too far removed from the reality of defensive shooting situations, using extensively modified guns, handmade ammunition, and speed-draw holsters that were impractical for self-defense. The IDPA founders believed that USPSA matches had become "equipment races", which were heavily dependent on a shooter's gear rather than their ability. In order to keep the sport in line with its founding principles, allowable alterations to the competition gear (including pistol or pistol caliber carbine) are carefully regulated in IDPA. Ammunition capacity is limited compared to some other action shooting sports in order to keep the playing field level for competitors from states that ban higher capacity magazines. Scoring Scoring at each match is based on the time taken to shoot the stage plus time added for any penalties accrued. Penalties are given for poor marksmanship (i.e. posting hits outside the targets' highest scoring area), failure to use cover, failure to follow a Safety Officer's directions, or any violation of IDPA rules. Penalties range from one second per dropped point on targets up to 20 seconds for a Failure to Do Right which is a blatant violation of IDPA rules—i.e. cheating or unsportsmanlike conduct. Unlimited Scoring Most IDPA stages are scored using Unlimited Scoring (previously known as Vickers Count) which means that shooters may fire as many rounds as they feel necessary to make the specified number of hits. The best hits on the target are the only ones that count for score. If a stage calls for two hits on each target, a shooter may fire as many rounds as desired and no penalty will be given. Only the best two