Just a bunch of us red-clayers here just wondering!!! I have done the hole thing in black dirt and had little black pebbles stick to it!
The coins just disappear after about 5 inches. I detect all these parks, sidewalks, apartments, and schools that are 80-120 years old and find TONS of 1970s coins 3-5 inches deep, but that is it mysteriously there are no older coins. These sites do not appear to have been filled in either, not all of them could possibly could have. I have found a 1889 wheat, a 1916 cent, a 1917 cent (eyeball find on the surface), 6 other wheats, a 43 war Nickel, and a 70-90 year old sterling broach. I am thinking that those coins are proof that I am hitting good sites that have not been completely, and probably found because they were lighter.
I probably need to spend more time trying out settings from Andy's book, I think his description of the junky fair site matches us, but he lists settings of - -2 auto sens,and
pitch hold, among the usual trash -Hi, Grnd - Diff, Recov - Fast, Deep - Off, Conduct sounds,
Gain 18, var & tone limit - 30, disc - coins and jewelry modified.
Maybe I should just try to dig nails deeper that that. I will probably get a bunch of nails, but who knows maybe I will get my first silver dime or quarter two after 50 tries?
My dealer said that CW relic hunters in the Carolina's have been using PI machines like the ML 5000, and that someone tried a Whites PI in Tenn and only got 6 inches, that was with a machine that was getting 2 ft in the NE. Of course PI means no discrimination, but better mineral handling and depth, and relic'ers are digging more than we are anyway... but if I am trying to dig all the nails and coins that are pretending to be nails, then ...
If I could get away from detecting sites long enough I would put in enough time in my test garden to figure out better settings, but the last time I did that was with my ML 305 when I was bored out of my mind waiting on the ETrac to arrive last month.
Lately I have been using manual Sens at 24-27, and going with restrictive patterns hoping that it will see around the junk better, but now I am thinking I will try more of a relic pattern just disc'ing wrap arounds, and also trying some lower sens, sensitivity...
I need to put together settings for this; someone once said that threshold or gain can influence nails looking too much like coins, maybe that will work the other way around?
We should dive into Andy Sabisch's book and come up with some settings together for our predicament. If we rack our brains out and put in a lot of our own effort, it will be more likely that some experts will join in and help us. My experience is that a lot of those experts can't grasp what we are up against. I still want as much help as we can get, but just remember that we are the people that are getting
single digit Auto Sens and average Auto Sens in the teens. As someone here said that is what he gets when detecting in "cinder" fill.
I created a group on another forum in hopes of accumulating the knowledge we need, I think I am the only member still, but feel free to congregate there or we could just all subscribe to this thread.
http://metaldetectingforum.com/group.php?groupid=129
Maybe Andy will have some specific advice.