Yes, nickle hunting is cake with the Sovereign and a meter. Around 143 to 147 VDI #, but probably like 144 or 145 being most common # at most site. It should lock onto one or at the most two VDI #s no matter which way you sweep. If it changes by 3 or more it's probably odd shaped trash. The audio should also sound "round" and not funky. Tabs start at about 148 or 149 and go up to 169 so they are easy to avoid while digging nickles or hoping for a gold ring in the nickle zone. Foil starts at about VDI# 60 and maybe ranges at the most up to about 114 or so no matter how large it is from my experience, but have to admit I haven't been digging foil signals much over the past year hoping for a gold ring. Usually foil will sound fuzzy or sick while a gold ring reading that low will sound warm, smooth, round, etc...and lock onto one or two VDI #s.