Drew, I looked at the wind chime link.
Now when I did the test for "Volleyfire" I suspected something like that going on & that is why I used all 12g 30" barrels.
I hung them side by side & tapped them at varying places up & down them but the note differences stayed about the same.

Back to the nut farm (Pecans). The boss called my Julian Arana. Eibar, "La Sorda" 12g with 28inch barrels, the howitzer.
I would like to hear Bo Whoop & The Howitzer & the Fox Chromox from across a duck marsh.
O.M