The studies that were done on waterfowl ingesting lead proved enough of a case to make non tox the only option for waterfowl, however until someone can provide a study showing Pheasants and other upland game are ingesting enough lead to cause death, I will not accept the blanket notion that we should all be using non tox by law. I have no problem with anyone choosing to do so on their own, but don't just pass a law because it sounds good.
Just my opinion, but sitting in a duck blind where the shot fallout will be in a concentrated area is much different then walking the uplands and the shot fallout from an occasional shot being scattered throughout.
FWIW