metal detecting

Hello fellow diggers- My buddy Dave & I and another new "digger" were detecting yesterday at a site in the western part of Virginia that was a known Union encampment for almost the duration of the entire war. An although this site has been detected hard, no site is completely ever detected...

What was your deepest coin found? How deep was it? What type of ground was it in? How old was the coin? What detector did you use? Mine was a 1979 US Quarter at 6in in moist dirt. Using a Garrett Ace 250.