hey folks I have found that these volcanic stones fly further I threw six over 200 yards furthest was 204.75
they average about four ounces this is two views of the same stone
this was a over all great trip took a sunny day off 74 degrees cast some stones
taught a young enthusastic gentleman my version slinging and sling making.
folks don't be sursprised if you come to pacific northwest. and you stumble on to my version of the sling
I have taught a lot of people this year