Trap is usually shot in squads of five shooters. A round of trap consists of 25 targets per shooter. A trap field has five positions, or stations, numbered consecutively from left to right. Five clay targets, sometimes referred to as "birds," are thrown for each shooter at each position, with one shot being fired at each bird. After firing five rounds in rotation, each squad member moves one station to his right, with the shooter on station five moving over to station one.
Find out more about the game of trap from the Amateur Trapshooting Association. (Copied from the NSSF website.)
Trap shooters are not to load their shotguns unless they are on a designated shooting station. Actions
always remain open otherwise, even when walking to and from the field. Trap shooters should load only one shell unless they are shooting doubles when you need two. Unlike sporting clays
shooters, trap shooters are allowed to shoot at each target only once.
Ammunition for clay targets: You are advised to shoot target ammo. Most hunting loads are too heavy and recoil can be a problem. Trap is best shot with #7½ or #8. Shot larger (a lower number) than #7½ is prohibited.
When you finish shooting clay targets, return the release to the house. Decock the throwing arm on each trap and turn OFF the pump. Refill the carousel for the next shooter. Completely break down the target boxes to flatten them and take them to the dumpster near the fields. Pick up your hulls. Fill in the log book at the field where you were shooting. Deposit your payment in the drop box at that field. Pay for Trap rounds and Skeet rounds separately. You, your spouse, and dependents pay club rate for clay targets; guests are charged more.
Clay target fees for trap are $3/round for members and $5/round for guests. Note: Members will be charged for their non-paying guests' rounds at the current guest rate. Be sure to log in and pay your fees before leaving.
Patterning Shotguns - There is a pattern board to the east of trap field #6.