I purchased 6 new carbon arrows Thursday after the final tests were run, and the Dr. decided that my surgery was not going to be emergency. Not being an emergency means taht it will wait until after the 1st of the year. I planned on using carbons to hunt with this year. I have previously shot a few carbons, but stuck with aluminum for hunting. I screwed field tips on my 6 brand new arrows, and decided to practice for a while Fri afternoon. Shot each of the 6 arrows 3 times, and was already getting good groups at 20 yards. My groups were at least a foot off from what the bow was sighted for with aluminum arrows, but were only 4-4 1/2" diameter rite from the start with no practice. Checked the arrows for cracks after each shot and had not found any cracks. On the 4th round the 1st arrow exploded as soon as I released. Luckily none of it ended out in my arm. I found about 1/2 of the arrow in 7 different pieces all within 5 feet of where I was standing. Must have missed a crack. Needless to say after this experience I am going back to aluminum for everything, because I know I won't get that lucky twice. Next time I'll have an arm full of carbon.