michinkae said:a dime is a dime, at least you found something. You probably hit a high VDI because of two reasons. 1. you had your sensitivity very high. Or 2. the taget was close to the surface. Remember, a detector isn't just a metal detector, it reads everything that gives off a magnetic signal like minerals. Your detecor is really a mineral detector. Theres nothing wrong with your detector, If you dug up a rusty nail, then your detector is unreliable.