I disided to go to an old house site and figured that , now that i had some depth capability i would find a silver coin NOT" after i was done note even one coin did i find but i did manige to find 5 shotgun shells down deep amist the trash PROBLEM some years ago thear whear several out bildings around this old house . theise structures whear burnt and the ash spread around by a bulldozer and now its all nicely mowed grass so I,m getting beeps every whear and the 10" coil was not helping the ground is just peppered whith staples frome the roffing nails from the boards and other large juks of metal I just had to give up on it it would be the equivelent of detecting at a comunity fire pit whear paletts are burned it just gives rapid beeps every 2" thear may be coins under it but i would have to dig all the staples and nails out and i just do not have the time BOO HOO