I could use a small sensitive coil for the small gold we get in the midwest since I cannot find a GB 2 I can afford? How deep would a GB2 with the 6 inch coil and Nuggetbuster headphones get a 1/2 gram nugget in moderate soil vs my TDi with this Coiltek loop?
Can you guys also tell me why gold tends to occur in red dirt, rusty rocks, rusty clay, etc...and how red does it have to be? Last year, I got fines and pinhead flakes in 3 spots where my dowsing rods pointed. There were also numerous nails and rusty iron junk mixed in with the gold.