I concur, <b>but</b>, I have a story about that!
My buddy Justin took me to a spot that has been pounded to death by Explorers, but many great coins came from there. Signals were very few and very far between. I got this scrappy, faint, squeaky hit that wasn't quite high enough to be an iron false and definitely not repeatable. The pinpoint was about 3"-4" from where the almost hit was. Classic nail pinpoint. Had there been more signals at this spot I would have passed it up, but since I hadn't dug anything in a while, I thought what the hell. I dig down 9" and stick the probe in and bam, loud low tone. Dug out a 1907 nickel. Turned the probe off and was getting ready to fill the hole and thought, "wait a minute, that was definitely not a nickel hit!" I picked up the detector and swung over the hole and it was a total null. I dug out the sides of the hole and deeper and stuck the probe back in, bam, the sweet sound of silver! 12" deep(probe was 3" below ground level, I have a witness <IMG SRC="/forums/images/biggrin.gif" BORDER=0 ALT="
">) and I wasn't to the coin yet! I get one more jab of dirt in and pop out an 1877 cc seated dime. This is also a testament to the X-1 probe! Had I not had it, there is know way I would have that dime!
Now you take this for what it is worth. Was the iron with the coins averaging out the nickel hit and bringing the tone up to silver/penny range? Or was I getting a hit from the dime and because it was so deep it was real scrappy? Or am I just lucky? I will say this, where the dime was located in the hole, was off to the side of the pinpoint where I got the initial scrappy hit.