I'm not an expert on such matters so I can't really go into technical details, but I did buy a set of cheap* carbons and shot them outdoors - and to quote Di from BOPAS "when they miss they really do miss." Consequently I've got 3 left out of a set of 8! I've found my carbon alloys (ACCs) much more forgiving and still have a full set - however, this could be down to the fact that they were much more expensive so I'm probably a bit more focused on my shooting
*when I say cheap I mean cheap - first end all the nocks flew off them....