T storms run me out of GB today, I did find a couple of itty bitty lead shavings . I got a reading of 13 , to me it was going to be a hot rock, well it would read 13, then go to a solid 3...so I dugfound the hot rock , waved coil over and no more 13 but still had a solid 3 , I dug , about 3 inches down I got it in the scoop, took a bit but I found an itty bitty sliver of lead.My thoughts so far.....if it can find lead that small it will find gold...….Great Coil.