Used the 6" Con. and got the 1907 IH penny which is my first and a 1910 wheat. 5" and solid sound and TID 32 for both. Old torn down church grounds. Used the 10.5DD MF and got to hunt an area I have hunted before and had thrown everthing I had at it and got clad. These 6 coins were all over 7" and 8" deep. 38' Buffalo is my second one. I cleaned the patina off it and used same method to clean my unknown date buffalo. It is a 33'. 1917 and 45' Merc, 30' and two 45 wheaties and all in a 12'x45' frt yard.