Gaius Posted October 26, 2013 Share Posted October 26, 2013 This weekend I was metal detecting over some very rocky ground littered with hot rocks. The worst part was I didn't even find a 9mm or 45cal round!!, only one very small piece of junk. So is there a preferred method for metal detecting over what seem like asphalt driveway only larger stones? Quote Link to comment Share on other sites More sharing options...
garimpo Posted October 26, 2013 Share Posted October 26, 2013 Gaius I wish I hadn't seen this post because today I was doing the very same thing you describe.....my method is to use a large DD coil.....the larger the better.....today I was using a Coiltek 19" round DD and only dug two deep hot rocks that were the size of a volley ball.....the interior of the rocks was red on red spots.....but the DD took care of most of the hot rocks.... Quote Link to comment Share on other sites More sharing options...
Gaius Posted October 27, 2013 Author Share Posted October 27, 2013 I'm sorry. Quote Link to comment Share on other sites More sharing options...
Hoser John Posted October 27, 2013 Share Posted October 27, 2013 I like the smallest coil I can use on any unit in that type a ground. You can easily move around larger rocks and easily get around hot rocks as your detecting a smaller area . Thay have a tendency, sometimes as no always in this bix, tend to sounf off similiar so any signal that even has a slightly different composition sound off different, as detecting a much smaller area. Better differentiation on smaller coils,try it you'll be a much happier fella-John Quote Link to comment Share on other sites More sharing options...
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