Pete,
What we wanted to do at our club is to be proactive and establish a baseline for Pb in the environment at and around the fields. We have 8 trap, 8 skeet and a 5 stand. So far so good. They claimed that waterfowl were ingesting spent pellets while feeding in the marshes, their gullets ground the Pb pellets thereby making then a lethal meal. If you really think about that scenario it would be like finding a needle in a haystack. I guess if you dumped a 25lb. bag of #4's on the beach they would find it and use it as grit as any bird would. The only birds I have seen die of Pb poisoning succumbed after a well placed load of #4's out of a full choke.
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