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Anyone know what depth the VDI becomes inaccurate :confused:
- Thread starter wvrick
- Start date
Larry (IL)
Well-known member
The VDI can become inaccurate at any depth for many reasons.
Although it can depend on a lot of factors, my personal experience has been around 5-7 inches. I've had some barber dimes with questionable readings at 5 inches. (My rule of thumb therefore is jumpy VDI's, but good pinpoint dig it. However I've had some funky pinpoints come up with a coin or two also that were on edge. I like digging iffies, just because I've been rewarded often enough to make it all worth it.
wvrick said:
It depends on the size of the target. My silver dollar in my test garden rings from 85-92 and it is buried at 13". I found a mercury dime at 8" and it gave me a vdi in the high 70's. I think the vdi is true to the item until the detector can no longer see the target.
But...... If you have a trashy area or high mineralization the vdi can be drawn out and cause it to be erratic.
Myself, I don't rely on the depth readings. At times I might use it for a general idea on some targets, but I find digging the target is most reliable. If I do for instance use it and read a quarter at lets say 7 inches, factors may skew the readings, so I become cautious to try and prevent stabbing a misread target with the deadly Lesche. I just don't rely highly on displays - but will at times use them as a secondary but generalized tool - though they can be fun. Will say I think the V3i color & features does have a cool factor to me.