Stump,

They flew right with my field tips. I didn't have to do anything but screw them on and they grouped well out to 50. One of my shooting buddies was shooting my heads on his arrows and shooting 2" groups at 40 with them. But he is a better shot than I am. I was a little skeptical of the small cutting diameter and I have never liked 4 blade heads but they left as big a hole as the rocket sidewinders and the spitfires which both have and 1 1/2" cutting diameter. I can't say they will do this every time because I have only shot one deer with them but I will give more feedback if the opportunity is afforded me. I don't think 1 1/2 inches is over kill. I think the bigger the hole the better but I am pretty impressed with the hole and the blood trail that these little heads left. To be perfectly honest I was pretty amazed that this little head left those big ol holes. Only time will tell if this was a fluke or not but I feeling pretty confident with them. My main reason for switching was how well they fly. After all, hitting in the right spot is the most important thing but after seeing the devastation these little heads caused I am pretty impressed with their performance on the killing end also.