Yeah, ive been to that page many many times, but ive dug 7 large cents this year all at the 6-8 inch mark and they all bounced from iron to highcoin in all directions, the only reason I dug these were because it was an old foundation site and my pouch was empty, one was a 1806 half cent. All im saying is it gets quite agrivating when a solid highcoin at 6+ inches turns out to be a half inch rusted head of a nail. Nothing is worse than spending 20 mins chopping thru roots on a good signal just to find out it was a nail or a pepsi cap. Nails are iron, so they should come in as iron. After digging large cents that bounce on iron i just dig every high tone that comes in at 6+ inches but only if i hear that tone in all directions. if i get a one way? it stays in the ground. Yes, im sure the user has a deffinate factor in what is and what is not found, but I think my finds tell me im doing something right. in one year I managed 19 large cents, 24 mercs, 16 barber dimes, 5 halves(3walkers 1 barber 1 seated) a belt plate, a breast plate, over 50 crotal and pedal bells, and the list goes on, forgot to mention quarters, many many quarters were dug also oldest being a 1906 barb. if you guys want pictures? just let me know.
For the record? after digging out a 5 - 6 inch plug all the large cent hits went strieght to high coin with no iron, and ive found that many nails do that also. mainly the heads of nails and those nail type staples.