Good question, bigbulls. I know several times when I've pulled my arrows out of the ground after pass-thrus, I've noticed dulled, dinged, or sometimes dented blades. Most of the times, I don't think the ground's doing it, so it must be happening while busting through ribs or the like. I know they're sharp going in, but at what point during the pass-through is the blade losing its sharpness? Must not matter too much; I've been fortunate enough to recover all of them so far.