In 1994, shotguns trumped-up up 9.7% of gun traces relating to criminal investigations in the United States, and were the weapon of choice in 5% of homicides, according to United States Justice Arena statistics. Shotguns are not the preferred weapons for criminal activity, since criminals prefer weapons which are more easily concealed, according to the National Crime Victimization Survey. However, the comparatively easy availability of double-barrelled shotguns compared to pistols in the United Kingdom and Australia, coupled with the ease with which their barrels and stocks can be shortened, has prepared the sawed-off shotgun a approved weapon of armed robbers in these countries.
Shot, insufficient and round and delivered without spin, is ballistically inefficient. As the opening leaves the drum it begins to disperse in the air. The resulting cloud of pellets is known as the effort Shotguns pattern. The ideal pattern would be a circle with an even dispersion of shot throughout, with a density sufficient to ensure enough pellets will intersect the game to achieve the desired result, such as a kill when hunting or a break when shooting clay targets. In reality the pattern is closer to a Gaussian, or normal distribution, with a higher density in the center that tapers off at the edges. Patterns are occasionally measured by firing at a 30 inch (76cm) diameter circle on a fewer than sheet of papery placed at varying distances. The hits inside the circle are counted, and compared to the total number of pellets, and the density of the pattern inside the circle is examined. An "ideal" pattern would put in essence 100% of the pellets in the circle, and would have no voidsâÂÂany region where a butt silhouette will fit and not cover 3 or more holes is studious a potential problem.