Ok all you ace users i have a question. Yesterday i detected three old sites that have seen a fair amount of use for a couple hundred years or more. Anyway i did not find any thing deeper than about three inches. Tried stock and sniper coils in coin mode. In air tests i get ten inches on a quarter. The ground is not real hot. What kind of results has everyone else gotten? Thank you all for any input. By the way i am in north central new mexico