subtypes of handguns are pistols and revolvers. They are much more convenient to carry in general, but usually have a shorter effective range and less accuracy compared to long guns such as rifles. In shooting sports, revolvers and semi-automatic pistols are the most commonly used. A rifle is a long gun with a rifled barrel, and requires the use of both hands to hold and brace against the shoulder via a stock in order to shoot steadily. They generally have a longer range and greater accuracy than handguns, and are popular for hunting. In shooting sports, bolt-action or semi-automatic rifles are the most commonly used. A shotgun is similar to a rifle but often smoothbore and larger in caliber, and typically fires either a shell containing many smaller scattering sub-projectiles called shots, or a single large projectile called a slug. In shooting sports, shotguns are more often over/under-type break action or semi-automatic shotguns, and the majority of shotgun events are included in clay pigeon shooting. Bullseye shooting Bullseye shooting is a category of pistol and rifle shooting disciplines where the objective is to achieve as many points as possible by hitting a round shooting target as close to the middle as possible with slow precision fire. These disciplines place a large emphasis on precision and accuracy through sight picture, breath and trigger control. Fixed and relatively long time limits give the competitors time to concentrate for a perfect shot. An example of bullseye shooting is the ISSF pistol and rifle disciplines, but there are also many other national and international disciplines which can be classified as bullseye shooting. The shooting distances are typically given in round numbers, such as 10, 25, 50, 100, 200 or 300 meters depending on firearm type and discipline. Competitions are usually shot from permanent shooting ranges and with the same target arrangement and distance from match to match. Usually the competitors each have their own shooting target and shoot beside each other simultaneously. Because of the relatively simple match format, beginners are often recommended bullseye shooting in order to learn the fundamentals of marksmanship. Bullseye shooting is part of the Summer Olympic Games, and a considerable amount of training is needed to become proficient. Bullseye shooting with handguns There are six ISSF shooting events with pistols. These include three Olympic events, plus three events not included in the Olympic program but contested at World Championships.