How long have you had it now? Was that a wet/dry sand hunt or in the water? I hear you about going to test and end up hunting lol. The only way i get much testing done is if i plan it with another hunter. Otherwise i hit the beach swinging. But you gather a lot of info from dug targets. You running in AM or Disc? Disc kind of drives me nuts with the ping pongs especially the falses since i dont like turning it way down. I prefer AM.... like the Xcal in PP mode i just get more out of the machine. Bit jumpy screen but over a target and you know it. I prefer the small fast pops of AM on mineral falsing. Running -30 tends to stop the wrap around when running high sensitivity as well. GL.
Did get to the beach to do a wet sand depth test on our 10¢ coin same conductivity as your Nickle and a lot of gold rings.
When test completed, kept the coil swinging over the dry sand on the way back to the car . . . detected and picked up a few items. . . Ring is just that, . . custom no value jewellery.