Perry....good question on the nickels.....my hunting buddy, John, found a lot of nickels today to include a silver war nickel where we were at today; a Georgia Grade School built in 1925. He digs everything to include the post 1982 zinc Lincolns. But I have been using high discrimination to cut my digging time and rejecting the zinc cents and nickels, even though my detector has "notch" in or out capability.....He is much younger than I...lol. Of course I lose any gold items, because of the higher discrimination......but saves me some bending time on the pull tabs.
However, I do like the 95% copper Memorial cents, and they have almost 2.4 cents of copper in them. So together we clean up an area very well.
Bill