I love 'em. I've taken 3 deer with them so far, all from the ground, using the blades sharpened right to the tip. The first two heads had no damage, the third I never found after the shot...but it apparently did it's job quite well.
Deer #1 : Broadside doe at 10 yds, shot with a 65# selfbow from partial "snap" draw (mabey 45#?). Arrow penetrated to the skin on the far side of her chest. Deer went down within 25 yds, just out of sight in the dense brush.
Deer #2 : Broadside button buck at 30 yds, shot with a 65# selfbow. Arrow passed completed through the deer's chest. Deer went down within 25 yds in sight.
Deer #3 : Rear-quartering 8-point at 18 yards, shot with a 60# bamboo backed osage bow. Arrow penetrated through both lungs and broke off on the far shoulder blade. Buck actually continued to chase does just 3 feet past me! Went down 50 yds away (75 yds. total).