I did my own toughness test on these Poplar's over the past few weeks as well. I took one arrow and it survived solid hits on hard cedar stumps, two large rock hits, a glancing blow off a cow's pelvic bone that had been laying in the pasture for a year, 1 2 x 6 direct hit, and finally broke right behind the point as Matt's did after plowing through a block target into yet another 2 x 6. Reeaaaallllyyyy tough, excellent shooting shafts at a great price. Thanks Matt!
Oh yeah, and it's really pretty wood too.