I continually have a problem with rusted iron on the beach ringing like silver. When I use a pinpointer it of coarse doesn't see the iron so I need to rescan the hole with the mt. Question is do any pinpointers provide an option to switch iron on and off. If it did I'd save a lot of digging by identifying the iron early. I'm using a Garrett ATPro with iron rejected to 40 and can't understand why some rusted Iron on Florida's treasure coast ring like silver. Any advice is appreciated.
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