Boris, I think Cyclone may have been referring to someone else's previous comment about seeing the arrow hit. At 10 yards that's pretty hard to do unless you are "peeking" especially with a 73 lb. bow shooting carbons. As far as penetration, who knows? Maybe you hit a rock or a root or the arrow deflected a little on the first shot. All you can do is try, try again. Good job on following up though. You just never know.