Mine is a FP shot. All of one penetrated the other except about 3 " my arrow length is 29" and I have a 32 1/2" arrow to show off now. I used to see alot of alluminum arrows proudly displayed at my local shops, but later found out that if you pummel a target with arrows and leave them there for several rounds sooner or later you"ll get one. But carbon appears to be a bit tricky in that if you are slightly off center it"ll bust the nock,split the shaft at the nock. Not trying to brag but mine was a 30 yrd. shot at a Delta deer trgt. and was shot one and two for the day! I was lucky in several instances, cheaper arrows than now, first time so its neat, and the odds are stacked aginst me ever doing it again are tremendous ! ! ! ! !