Most valuable MD lesson I learned this summer.

treasurekidd

Bronze Member
Nov 20, 2004
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Rhode Island
Primary Interest:
All Treasure Hunting
Well, it took me almost until the end of my forst year of metal detecting to figure out why I was finding tons of coins, but very few older coins. I have an ACE250, and I find that the target ID is very accurate for targets at 4" or less. I also find that the pinppoint feature does seem to have trouble locking a target at more than 6", unless that target is a large item, like a beer can at 10" reading as a dime or a quarter at 4". With that said, I want to remind everyone of a lesson I learned early on. The target ID, depth indicator and pinpoint features, while very helpful accessories at times, are just that: accessories. I think we all, myself included, tend to rely too heavily on these accessories instead of concentrating on using the belltones, and our own experience to tell us what is what. I have a simple rule of thumb with the ACE250 that I try, and I stress TRY, to follow. Any target showing 4" or less, I go with what the target ID says when deciding to dig. If the target is 6" or deeper, I TRY to disregard the fact that the target ID is jumping from nickel to penny to dime, and that the pinpoint is thready and inconsistent. At 6" or more, you need to realize that the effectiveness of the electronics accessories are limited, but that the effectivness of your belltones, and your own hard earned experience are not. You know what a good, solid signal sounds like, right? Use your own experience with your detector to determine what that weak, inconsistent signal is telling you, and you'll find that you know if you want to dig it or not. If your not sure, play the guessing game. Try to guess what your target is while you're cutting the plug. After a few weeks of playing this guessing game, you'll find that more often than not, your guess is correct.

The ACE250 is a great detector for the money, but it's still only a beginner machine. Yes, it's great at cleaning up the school yard or playground with the 2"-4" clad targets, but you need to remember that it is not a $700 detector, and as such, is limited in certain situations. The ACE250 will detect almost as deeply as the other, more expensive machines, but not if your running it in coin mode all the time. Get out there, and try running it in all metal with the sensitivity up as high as you can go without falsing, and see how it does. You know what a good signal sounds like, so use your experience, and don't let all the "easy" features it comes with blind you to the valuable experience you could get by using your ears and brains, rather that just your eyes. When using the ACE250, deeper, older targets call for a change of tactics over clad hunting, so give it a try and see how it works. The results might suprise you, as they have me when I remember to do it!! Hopefully, using these new tactics, next year will bring a lot more of the older stuff! HH!
 

Great advise TK ....

but the best of it was to LEARN the machine !! In a previous post, I pointed out that my LAST find of the year with mine ( before I sold it ) was a 1854 $1.00 GOLD Piece ( that is QUITE small of a coin ) at 6 ". Practice,Practice,Practice. ;)
 

It also depends on where you are hunting. I agree that at under 4" is dead on most of the time as far as coins go. But, I upgraded pretty quickly to a minelab explorer xs but I still feel that the ace 250 has its time and place where it can be more effective than the explorer.
 

Thanks for the write up TK. I'm pretty sure there is an ACE 250 waiting under my Christmas tree. I will work on your techniques to begin my MDing. I'll have to write up my finds carefully to learn what the machine is telling me.
 

The ace is a great coin shooter -- anything over a few inches though and you never know what your going to get. I do love the ace for going around playground equipment -- can get pretty close to metal bars and such. I can't get near as close with the ex2
 

Great Advice!! I agree. I have a GTA 550 and the same goes for this model, too.
It's a great machine, but past 4" I usually do not trust the ID'ing. If the target is past 4" and I
think it is worth while digging, I usually check it again once I dig a plug, and usually the ID gets
more accurate with another swing. HH!
 

Another valuable MD lesson ...

Back when I started all this detecting tomfoolery, Lucille Bowen said something I'll never forget:

"If the target is repeatable and reads more than 3", dig it up!"

End of story, as it were. Now, the Ace 250 has it's limits as has been noted. However, practical depth capacity isn't one of them. It will go as deep as you probably need, all the time (remember the 80:20 Rule and that you NEVER get it ALL).

Yes, you gotta crank the SENS to do it.
Yes, you need a relatively clean site to do it IN.
Yes, there needs to be something there worth detecting. Sometimes its a school yard, sometimes it was something else. You need to know.
Yes, You need to listen closely.

Here's a suggestion. I started detecting when there were no LCD readouts and depth was determined somewhat differently - by the coil height method. That is, if your signal is good (repeatable and clean) but dissappears as you lift your coil from the ground, then it's deep. And you need to be digging it up, regardless of what the ID meter says. The Garrett's, in my experience will clearly detect a target if it is of good metal, at sometimes scary depths, but, like any other detector, it's a crap shoot past 4"!

Wanna get real good at all this? Wanna do it quicker? Then follow these steps:
1. Switch your Ace 250 to the 'All Metal' or 'Relic' mode.
2. Put a strip of black electrical tape over the ID and Depth segments of your display
3. Detect and practice the coil-depth method.
4. As another has alluded to, begin telling your detector whats probably there, not the other way 'round.

If you do this you'll get more trash, but you'll begin diggin more. You'll cover less ground, so you'll have to pick your spots better - or contend yourself with being happy and with being out enjoying your hobby. And if you make a habit of this (I still do it it about every fourth time out), DON'T come to my town...there's enough competition already!!

David
 

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