Well, I suppose everything depends on if there is a nickel there, but in this calendar yar I have 136 regular nickels, 16 war and 7 buffs. I got 9 yesterday off one front yard demo. Most were in the 2-4" range but one was a 1941 and it was about 6-7" deep. It was really black, cruddy caked looking and I thought it was a war. Almost every solid, repeatable, small target and locked in 12-13 is a nickel, but sometimes there is a folded pull tab with the round nickel sized pull ring that will read perfect nickel. Most of the buffs for me come in at 11 and darned near every beaver tail does the same. I run manual sense up around 25-28 all the time, small coil, 4 bins with nickel 12 11 to 13 set to high tone just below my high 39 and above bin. I also have 'seawater' enabled all the time.