So when I built these arrows, I specifically said the grain wasn't good enough to hunt stumps. I need to correct that statement. Yes the grain was absolutely terrible on some of them, but the toughness is incredible. Once I had them trained to stay straight and my painting was done, I figured stumping was the only logical use for what would be a short lived experiment. I was wrong. They bareshafted a bit weak but I can't cut them shorter so I ran five inch feathers. They fly awesome out of my montana, I can switch between the montana and my hunting bow without missing a beat. I put judos on and I've hit some incredibly hard stumps so far, glanced off a rock, and shot three trees while trying to do "thread the needle" shots. There is 0% damage to any of them. I am shooting these recklessly and with no care but I think they may just continue to blow my mind. I know @Ken Borst you were thinking of trying them, id say if you want to, do it. Make sure to weigh and spine them yourself, but they're tough. Even just cutting a quarter inch of the point taper with my knife was a huge chore, they're hard. My only complaint left, was I had no weight choice so they're very heavy. They're 730 grains all done so I only get 148fps with them but they're sure performing well.