The CX 300' s are considered on the lighter side of carbons @ 8 to 8.5 grains per inch. So depending on what your looking to do with your carbons depends on whether they are ok or not. Obviously you get a faster, flattery trajectory of flight with lighter grains. Which some like for long shots on certain types of game, and 3D competitions. But on the down side that means less kinetic energy for penetration, and often more bow noise. The arrow can be used for target or hunting, and I don' t see a problem with your setup on that arrow. You just have to decide if thats ok for what you want to do!