My 20"s don't rattle when u shake them
But the 410 doesn't sound like very much buffer
Wish I had noticed this b4 tonite
It shoots avg
 127 in 10"  the shot in the ninja rattle worse than the bird shot I carry along 
Didn't think them high priced tss was supposed to do that
Wonder what it would do to pattern maybe that's why I am getting so few in 10 ring