goldtimer Posted February 19, 2010 Report Share Posted February 19, 2010 Hi, I'm looking to buy a coil to get maximum depth on those deep nuggets. I'm running a GPX 4000.What size and brand would you guys recommend?Thanks in advanceGT Quote Link to comment Share on other sites More sharing options...
grubstake Posted February 19, 2010 Report Share Posted February 19, 2010 The Goldstalker, Mono 18x12. It goe's deep. Grubstake Quote Link to comment Share on other sites More sharing options...
nvchris Posted February 19, 2010 Report Share Posted February 19, 2010 Size matters, Big round ones go the deepest. So for max depth use the biggest round you can. If there is room to swing them.A rough rule of thumb is that an elliptical coil compares to a round by it's smallest dimension.I.E. a 14" x 9" elliptical is roughly equal to a 10" round for depth.I've seen where a 12" round sounded off on a .3 gram nugget at 6" and a 14" x 9" had no response. Again if theirs room to maneuver the coil in and around the obstacles.Terrain and target size dictates my coil choices.When I hunt my go to coil is a 18" elliptical. I feel it's the best compromise for my specific terrain conditions and the average size and depth of the gold.My next choice is a 16" round IMHO it's the best compromise for max depth and sensitive. I've hit on sub gram nuggets a few inches deep and half oz'ers at 18". Quote Link to comment Share on other sites More sharing options...
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