Been away from the hobby a couple years but missed it so after some research I got a makro 2. Went to a local park this morning, found some clad and pull tabs, a shotgun shell casing, and a newer lock. Hunted in 3 tone and I noticed if the tone was high and the number was repeatable it was a coin. If it were high tone and the numbers jumped it was a pull tab. Not sure what deep silver would do though. I hunt mainly parks and old homesites. I know putting in the time to learn the machine is best but any advice that might speed that learning curve?