With the right shooters and the right shells, 2-3/4" shotshells can be very effective on geese.A group of shooters from our club, including two very good skeet shooters, went on a hunt at a lodge belonging to one of our club members.The two skeet shooters used their over and under skeet guns shooting 2-3/4" bismuth loads and they killed more geese than the other hunters that used their 3" and 3-1/2" semi auto's shooting steel shot.The denser bismuth shot allowed them to use smaller shot which increased the density of their patterns and also provided better penetration since the pellets weighed the same but were smaller in diameter.Their superior shooting skills also allowed them to kill more geese even though they only had two shots in their guns.