We did depth tests at 8” in heavily mineralized soil with two targets, a Liberty Silver Dime, and a 14K gold men’s wedding band (5-grams). We dug two plugs, and pushed the targets into the wall of the hole, then refilled it and tamped it down.
Tests were done with a normal walking and hunting swing approach and pass over, and pinpointing the targets (just swinging directly over the targets). Using MINIMAL Discrimination (set just above Iron), the following machines either struggled with or missed one, or both targets:
CTX 3030; XP Deus; Whites DFX; Tesoro Lobo Super Traq; Whites V3i; Fisher F75; Bounty Hunter Platinum; Garrett AT Pro.
The Bisstool V3 with an 11” coil nailed both targets clearly from every direction it approached from. Every other machine struggled, and even the XP Deus owner and the three CTX 3030 operators said they probably would not have dug the signals they were getting. When I popped the Tesoro Lobo Super Traq into ALL METAL, I could hear both targets clearly, but NOT in Discriminate mode.
There ARE drawbacks to the Blisstool.
It is not a beginner machine, and is a one tone, 12-knob Monster! The coils are NOT interchangeable between machines, and are made for the specific machine they are to be used on. They are expensive. So there are NO aftermarket coils, or replacing yours with one off of Ebay. It hits on ALL Metal, even with full discrimination, but the signal is “broken” and has a different modulation than no-ferrous targets. So you are still getting signals, no silent discrimination.
Because the machine has to go back to Bulgaria for repairs, it takes a long time and shipping is expensive. Blisstool USA will give you a “loner” while yours is being repaired, but I still don’t know who pays all the shipping involved.
I will be testing the machine in Arizona Gold country this fall. I’m not completely sold on the machine yet, but I was certainly impressed by its ability to nail a silver dime in hot dirt at 8”. It sounded like a quarter at 4” with the CTX 3030 and XP Deus. Just saying..