I switched to FMJ's this year, and to say I'm displeased is an understatement. For all the hype, they are the least durable arrows I've ever shot. The reason I went to them was to increase my arrow weight. Next year I will be going with a gold tip kinetic, or something along those lines. I've been through about a dozen fmj's since I tuned my bow to them in september. and I haven't been shooting that much since then. They break, crack, bend etc. Not only that, but I've found that many will develop dimples in the aluminum sleeve, without ever nocking them against another arrow.