Got out with the X-Terra 70 & 10.5DD 7.5 khz coil. Pulled a few bullets and a nice eagle button & a couple of whatsits. The button was deep, at least 10" and had 3 square nails in the hole with it. Hunted in all metal, 2 tone, sens 28, auto track on. The signal was choppy high tone with mixed low tone iron. I can say that this is my 3rd X70 and it will not be traded or sold!!!!