The thing with carbon crossbow projectiles is that those suckers are *stout*. They are built as such to compensate for the increased torque exerted by a crossbow, hence why it ain't a good idea to throw a regular compound bow-rated arrow on the rail and send it. Odds are good that the regular compound arrow would blow out, even if you found a way to get it to nock (not likely). I use the Parker Red Hot carbons and they have never shown a hint of cracking. Regardless, one they go through a deer, they get tossed, but as far as routine target practice into a block, while I still inspect them before use, cracking has never been an issue.
At the end of the day, use whatever floats your boat. As long as it's rater for the poundage/other specifications on your particular crossbow, it's all good, be it aluminum or carbon.
Last edited by Six-Gun; 03-07-2017 at 01:56 PM.