Cool! Thanks for the info. I only found modern coins there. My detector is a bounty hunter tracker iv so I'm not sure it's taking into account roundness. Not sure how it works exactly but I put it on tone discriminate and set the knob to about the 1 o'clock position. Seems to find all newer coins fine. I'm new to this and have been out 5 times so far. Still getting used to it. Maybe I should go back and try again?