I have shot the NAP crossfires, and they flew awsome. I shot two deer with them one doe about 120 field dressed and one buck that was pretty small body wise, he dressed out at 180. Like I said before awsome arrow flight, but as far as penetration goes. I wasnt impressed at all. The concept is cool with the flight tabs and that ability for the blades to spin out of the way of bones and what not. I shot the buck high in the shoulder blade at 30 yards and didnt even get an exit. I was shooting a bowtech patriot at 70lbs with a 29inch draw and a goldtip XT arrow. Total arrow weight was about 385 and speed was around 285 I believe. The tips on the Crossfires are not very sharp and Im guessing that is the main reason for lack of penetration.