After reading Mike's theory on sensitivity I decided to go back to an area I hunted 2 weeks ago and found some military buttons to see what if anything I missed. Lo and Behold if I didn't find a lot more targets that I missed. Found 1 whole and a half of an old wheat along with a Roy Rogers and Trigger Ring. Also found a very old 5 cent amusement token I have never seen before and an old 10ga. shotgun shell which is always a nice sounding target. Nothing major but the point is lower apparently works like a lot of you have said whereas I have always tried the max and then some, not any more. Thanks Mike, almost forgot I did find another older button, the old metal type with the slot in it, I'll take pic's. a little later tonight. Thanks for looking