Thanks for the Question Kac and Badger... I had done 3 different test on Nickels at 3 different beach's, ( two of the test were with nickels on the end of yard sticks, then one was dropping the nickel down the PVC pipe) results were 17 plus which is the one in the video below, next test I buried the 18 inch yard stick nickel and it hit fine, then the PVC pipe nickel test which hit at 19-20...The beach in the video below I chose for it had lite veins of black sand in the mix..if you look you