I have shot the 2 blade rage since they have came out , they are real bad , makes tracking a breeze , However my hunting buddy has a mathews bow , not a z7 , but one from the year before and he has lost 3 big bucks with the rage , after shooting them at a actual deer target , we found out his bow is too fast for them they did not open they only punched a feild point hole through the target , they seriously did not open , however with my buckmasters split limb bow at 70 pound pull they never failed on the target or deer ...just a little FYI ...If your shooting those top notch fast bows lookout !!! if so better shoot the 3 blade muzzy !!!