It very well could be a deep coin on edge...coin partially masked by iron...coin on the brink of detection depth, etc...to name a few. Also please be aware if you use an SE that the cursor can and will recat a little than the explorer xs and explorer 2. Also because you run the iron mask at 22 instead of a moe open screen...that bouncing/walking crosshair might not mean the same thing. There is a ton of links and posts out there from good hunters like Bryce-IL...Mike Moutray...charles upstate NY...etc to name a few... so do a search on their past posts. I hunt with Bryce often and he uses the same iron mask 22 setting as you do...and so do I. Good luck with your hunts. Just remember IF you uze a different iron mask setting than someone else does in their charts...graphs...etc...the cursor can and probably will react differently than their graphs show. Bryce had some posted at one time for iron mask 22 and charles had some great info for a more open iron mask.