[size=medium]I was doing some testing in my yard with some civil war bullets that I had found before. I noticed on the ones buried deep (10 inches or more) they would hit in the 80's and 90's when I had the detector set on the 2.5 setting. I made a program that has everything from 69 to 95 accepted and the rest discriminated out. I set the frequency to 2.5 and left the tx boost off. I think I was running 12 rx gain and around 88 discrimination. I went to an area that will still give up a bullet or two but you have to work hard for them. I only had a short time to hunt and wanted to dig the targets that I thought were real deep and had potential to be good targets. I dug probably 4 holes around 12 inches or more deep but never could find the target. I got another deep signal but this time decided to use my pinpointer to see if it was something small on the surface. Sure enough it was a tack. Sounded just like a real deep target. I bet the other 4 holes were tiny targets on the surface too. Learned my lesson on that one. I was able to dig two bullets using those settings. Both were deep and hit in the high 80's or 90's. The two lighter colored ones (Bullet and round ball) were the ones I dug. The other one I dug today while coin hunting. It was masked by trash and the signal was jumping around but I decided to dig anyway.[/size]