usually the problem with carbons is getting enough arrow weight to get to 10gpp. I shoot 570gr arras out of a 52# recurve and a 57# R/D longbow.

But I had to add 100gr brass inserts and 200gr heads t get to 570 gr. FOC is high, unmeasured, and they fly like darts bareshaft.

don't see any need for 15gpp for deer hunting though.

the other prob with carbons is getting the spine correct for yer bow, usually requiring a longer arra with heavier point weight. I'd say a 400 spine is too stiff for any 45/47# recurve.

you can reduce the stiffness by adding length or heavier point weight.I draw 27 1/2" but my arras are 30" long to reduce stiffness, using GT 35/55s.