My friend has shot 3/4 oz loads for skeet and sporting clays out of his lightweight French 12 bore for years. He is a pretty good shot and it never seems to hold him back. He loads red dot in a Win AA or REM STS with the claybuster pink wads.

Link to the data http://www.claybusterwads.com/index.php/winchester-style/53-cb0175-12-load-data