Trapshooting

Trapshooting is one of the three major forms of competitive clay pigeon shooting (shotgun shooting at clay targets). The others are skeetshooting and sporting clays. Many versions exist, including Olympic Trap, Double Trap (also an Olympic event), Down-the-Line, and Nordic Trap. American Trap is most popular in Canada and the United States, primarily as sanctioned by the Amateur Trapshooting Association.
In some ways, the sport is a replacement for a game where the targets were live pigeons. Indeed, clay pigeons is one of the names used for the clay targets in shooting games. The layout of modern trapshooting is different from skeetshooting in that there is only one house releasing targets, and the shooters only move through five different positions.
Trapshooting has been a sport since at least 1793 when real birds were used—typically the Passenger Pigeon, which was extremely abundant at the time. Fake birds were introduced around the time of the American Civil War, as the Passenger Pigeon was nearing extinction, and sufficient numbers were not reliably available. Clay targets were introduced in the 1880s.
American Trap is popular throughout the United States and may very well be the most popular form of clay target shooting on the North American continent. The Amateur Trapshooting Association (ATA) governs official events and rules. The ATA is generally considered the governing body of American trapshooting and is one of the world’s largest shooting sports organizations. Another governing body is the Pacific International Trap Association (PITA) which is active mainly in the western United States. PITA rules are nearly identical to ATA rules.
The ATA hosts the Grand American World Trapshooting Championships, which are held every August. After decades in Vandalia, OH, the "Grand" moved to the new World Shooting and Recreational Complex in Sparta, IL. The Grand attracts many thousands of shooters for the 13-day event, which is billed as the world's largest shooting event.
The ATA sanctions registered trapshooting competitions at local clubs and facilities throughout North America. It also coordinates zone competitions leading up to the Grand American each summer, as well as "Satellite Grands" throughout the US. State organizations also hold state championship shoots each year, which are also sanctioned by and coordinated with the ATA.
American Trap is broken down into three categories: 16-yard singles, 16-yard doubles, and handicap, which is shot between 18 and 27 yards. In singles, each shooter takes one shot at each of five targets in each of the five positions in sequence while standing 16 yards (15.6 m) back from the trap house. The trap rotates back and forth, so it is impossible to know which way the target is going to come out. Handicap is the same as singles but shot from further away. Adult male shooters start at the 20-yard line (18.3 m), and women and sub-juniors start at 19 yards (17.3 m) and work their way back. Yardage can be “earned” by shooting a score of 96 or higher, winning a championship or other major event, or shooting the highest score when 15 or more competitors shoot that event. No two shooters on the same squad should have a difference of more than three yards (2.7 m) between them. Doubles is shot from 16 yards (15.4 m), and the trap is fixed to fire straight away, with the left and right targets appearing to be straight away when standing between positions 4 and 5 and positions 1 and 2, respectively. Two targets are thrown at the same time, with one shot per target allowed. There is no second shot on any target in American Trap singles or handicap.
When shooting American Trap for practice or fun, a squad of five will shoot 25 targets each for a total of 125. Registered ATA shoots require shooters to shoot 50, 100, or 200 targets per event, depending on the scheduled event. Most of these shoots are for personal average or handicap yardage.

Arms & Equipment

American Trap is generally shot with a 12 ga. single- or double-barrel shotgun, such as the Browning XT Trap. Shooters will often buy a combo set of a mono and over-under barrel gun for shooting singles and doubles, respectively. Semi-autos are popular due to their low recoil and versatility; they can be used for singles, handicap, and doubles. Trap-specific guns are normally a manufacturer’s top-of-the-line model and are often embellished with engraving or inlay work and higher grades of wood. Trap guns differ from field and skeet guns in several ways and normally shoot higher than their counterparts, as the targets are almost always shot on the rise. The most obvious difference is in the stocks. They are normally Monte Carlo or have an adjustable comb, an adjustable butt plate, or both. Such guns also have long barrels (700-850 mm, 28-34”), often with porting and anything from a modified choke to a full choke. The majority of trap shotguns built today feature interchangeable choke tubes, but older guns generally have fixed chokes. Some shooters have a complete set of choke tubes (modified, improved modified, improved cylinder, and full). Additionally, most shooters wear a vest or belt that holds 25 cartridges, with a second pocket for the spent shells

Ammunition

American Trap is shot with lead target ammo, with a shot size between 7.5-9 (2.0-2.4 mm). Ammunition is allowed a maximum of 1.125 oz (32 g) of shot, and maximum velocities vary with shot mass: 1290 ft/s (393 m/s) for 1.125 oz (32 g), 1325 ft/s (404 m/s) for 1 oz (28 g), and 1350 ft/s (414 m/s) for 0.875 oz (24 g). Maximum loads are generally only needed for long handicaps or the second doubles shot. Although Winchester AA, Remington STS, and other higher-end shot shells have been popular in the trapshooting world for quite some time, cheaper “promotional” shells such as Estate, Federal Top Gun, and Rio are becoming increasingly popular due to the price increase of higher-end shells. These promotional shells still offer the decent firepower of Winchester AA shells but lack a sturdy hull, thus making them difficult to reload. Reloading is also becoming much more popular as it doesn't cost as much as buying new boxes of shells, and the manufacturing of a box of shells doesn't take quite as long as it used to due to the invention of hydraulic reloading machines.

Trap Etiquette

American trapshooting, more so than other shooting disciplines (including Olympic "international" trap), develops a certain rhythm to a squad’s timing between shots. The manners of any other squad member(s) can affect the performance of individuals within a squad. Shell catchers are a must for anyone using a semi-automatic; a shell hitting you in the head or arm can certainly disrupt your concentration. Most shooters also carry a few extra shells in case they drop one. It is better not to pick up any dropped shells or other items until after the fifth shooter has fired his fifth shot of the station, and the squad is about to rotate to the next position. Idle chatting between shots, vulgar calls, and unnecessary movement can be generally disruptive. Everything is considerably more relaxed during a practice squad, but one should still use discretion.
Commands from the scorer and other shooters are as important to squad timing as the behaviors of the shooters on the squad. To start a squad, the shooter will ask if the squad and puller are ready (usually by calling "Squad ready?" followed by "Puller ready?"). Next, they ask to see one free target, traditionally saying, "Let's see one." The scorer will call missed targets with a command of “loss,” “lost,” etc. When the first shooter has fired his final shot of the position, the scorer will sometimes call “end” and will command “all change” after the fifth shooter has fired his last shot. The shooter on position 5 then moves behind the rest of the shooters on his way to position 1 and will signal when he is ready to the first shooter, who is now on position 2. The standard call for a target is “pull,” but many shooters like to use their own variations of "pull" or words that will help them concentrate on the target.
Information on this page is sourced from Wikipedia.