No Cache Just Yet.
The dogs dug a hole a foot deep in the back yard. I just put it to good use and ran some depth tests. It appears that the lid is what the coil hits on and not the coins. However, the coins were mostly in slips and not contacting each other. Therefore they would not be able to act as a larger mass. That is my theory anyway. Even so, the jar was standing upright, and that means the lid would be the first and only target the the machine would read.
Now, I could have run the Sens up and picked up more depth overall but I was looking for stability as I would if I was hunting. These were measured tests. I believe if the lid was rusty I would pick up a little more depth. I believe if I had ran in Prospect I would have picked up nore depth.
OK, how I tested (these are some tests I ran a while back)
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Subject glass jar with metal lid lid rings at 12 to 30 air test, zinc ?
Silver
11oz Bullion -- 7 rounds, 2 rectangle, 2 Silver Eagle
7 silver dollars-- 2 peace dollars, the rest Morgans
1 half walker
1 half 40%
1 half clad (oops)
2 quarters Washington
1 quarter slq
6 dimes-- 3 Mercs 3 rosies
1 money clip with a 1921 Morgan in it
Most coins were in flips. 3 Morgans were in stapled card board holders.
9" MF CC 12"
5x10 HF DD 11"
6" HF DD 10"
All are to the top of the jar and the jar is 6" deep.
Jar was standing upright in the hole, I was using a normal hunting sweep speed.
Settings are sens 25 tracking and auto noise cancel Thresh set at 5 results same in AM and Pattern 1 Target stabilisation on
I believe I am hitting the lid and not the silver at all Should have ran same test on jar sitting side ways in the hole to simulate a bag or something I will do another test later. I did run one coil at 10 on the thresh and it may have picked up a half inch or so but maybe not. I could pick up another inch or 2 with a very fast sweep. But I don't hunt that fast so... Give it a shot see what you get. I am going to try another test with a jar of copper pennies but not today.
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HH
Jeff