The problem I have had with the four deer I have killed with a 2 blade Rage this year is this huge bloody spot right in the middle of my hunting area where that rage cut that massive swath in them. Four deer shot, 2 DRT and the other two went about fifty yards with great blood trail. All blades opened and none broke on any of the shots. I shoot a Z7 30" 70# with CE Maxima 350 at about 310 fps. I am gueessing arrow weighs around 380ish grains.