Most experts say the best loads for geese are sizes 1, BB, BBB, or T steel shot. For most hunting situations, BB or BBB shot is the most effective shot size. Both have plenty of pellets, but still enough energy to bring down a goose. Guns are usually 10- or 12-gauge. Because steel shoots tighter patterns than lead does, the best chokes for geese are modified and improved modified. However, each shotgun choke is unique, which is why hunters should pattern their particular guns.

To test loads, place a 40- by 40-inch-square sheet of paper at the same distance as flying geese that will be shot at. (For most hunters and situations, that's about 30 to 50 yards). Fire at an aiming point you mark on the paper. Do this on five sheets. Then, on each sheet, draw a 30-inch diameter circle around the densest pattern area on each sheet and count the pellets that hit inside the circle. This is the "pattern density."  Try different loads and chokes until one is found that puts enough pellets (from 35 for heavier loads up to 55 for lighter loads) into the circle, which ensures that enough will hit the goose's vital zone for a clean kill.

Another common mistake of beginning hunters is to shoot at geese flying out of range ("skybusting"). This can cripple birds, flare off approaching geese, and may cause approaching flocks to fly even higher. Some exceptional shooters have the skill to occasionally drop a bird "from the stratosphere," but for most hunters, a kill at over 50 yards is just dumb luck and poor sportsmanship. A good rule of thumb recommended by goose guides is this: If the end of your gun barrel covers more than half the bird, it is beyond 45 yards and is too far away for a clean kill.

It takes practice to find the correct lead for geese. The big birds have slow wing beats that make them appear to be lumbering along. But actually, geese move as fast as a mallard. Lead accordingly.