Thanks Paul. Any info is a big help. I appreciate it. I was under the impression these arrows are lighter. I feel better knowing that they are heavier. Given my setup, would the 100 or 125 muzzys be better. It sounds as though a pass through is desirable, so would the heavier tip be better? Also, would 3 or 4 blade be better for me? Would turning the bow up to 60# make much difference? That's peak weight. I have back problems so I wanted something easier to pull, hence the lighter weight. I have enjoyed reading the posts here, and everyone seems interested in helping each other.