Gambling is an issue like firearms - they are both scourges of society. The less we have of either, the better it will be for the nation. They are not used in any Olympic or Commonwealth games shooting events and the only prominent international event using these guns is highly questionable thanks to the use of human silhouettes as targets.
All targets used in Olympic competition are circular in shape.
Actually I'm a bit embarrassed to admit how many times I've seen RoboCop, The Terminator and Terminator 2. A psychologist would have a field day analysing the phallic symbolism of duck hunting and what the practice reveal about the sexual inadequacies of the men involved.