Theres a lot of variables if you are just after old silver coins...you can read posts on all the different forums here from guys that hunt for them. You will start to see a pattern develop in their methodology, or, you will see how some fellows, (Aquachigger) tripped across 7 pounds of them in a shallow stream last year! If you are out swinging, you will find at least one eventually, and I bet it will be shallow. Try to find a style of hunting that suits you, and put in the time to learn about your machines language, and pay attention to location, (why is this item here?) If you are shooting sports fields, you WILL find silver jewelry, If you set a goal to dig 1000 pennys, and 1000 pulltabs, you will learn pretty quickly what is what, and you may just find a gold ring along the way. Theres nothing wrong with becoming a Super Clad Grabber, thats a skill all in and of itself. Detecting for anything should not be a frustrating experience, it should be more of like a riddle quest...ask yourself what will I most likely find here? and then go and find it...its a study of human behavior more than anything...just chill a little and concentrate on the learning curve, the more targets you locate in the shortest time possible and how well you get at looking for and reading locations is what it takes. These forums will cut down on your learning curve immensely. Good Luck, Allen!
Mud