Hi Coach c, I'm the author of deep silver. You have brought up a very important point. If you want coins in the ten inch and under range cc8137's advise is true also this is the best way to learn a new hobby. If you want to dig coins out of the range of your average detectorist you need to learn a few things about your detector. First even though Garretts scan track states equal depth at any swing speed I have found this to be true only if you maintain a consistent speed throughout the swing. Garrett detectors are very sensitive if your swing speed changes during the swing or your loop distance from the ground changes during the swing you will get falsing, { usally coin dings },. Once you master a consistant swing speed you can learn to recover the deep targets which often don't repeat. When I first started with my 2500 I would get a belltone at the end of each swing, It was comical, I would be going in circles checking these dings, then I finally figured out that it was, the slight raising of the loop and change of swing speed which was causing these belltones. Also if during a consistent swing you pass over a small depression that contains iron you may get a belltone. After digging many deep targets I have learned that many of these "false signals" are not false at all, rather they are targets at the fringe of the detectors depth potential. This is were I discovered the magic of the Garrett pinpoint mode. If you have a signal during a level and consistant speed swing there is a target even if you can't get this to repeat, often the target is tiny or extremely deep. You must watch carefully to see exactly were the signal was recieved and then pinpoint over this location, this takes a lot of practice. You must pinpoint with a clear GTA in order to get an accurate reading which means you may have to pinpoint from numerous directions and you need to reset { by swinging }, The GTA each time. If the pinpoint mode GTA keeps reading say eight or nine and you recieve no audio get ready to dig because you have now located a super deep target. I must point out that there are many places were this type of digging would be practically Impossible, such as nice lawns, parks or places that have rocks and roots. You can practice this technique by burrying a coin just out of the range of a clear signal, swing the coil over this coin numerous times from different directions and you should recieve one or two " false signals" then use pinpoint and watch the GTA. This method is very accurate although I often find small targets such as copper wire. Good luck hunting, Darryl.
This is a wonderful community and a great place to share info.
Feel free to ask for advice at any time.
Happy Hunting!