how bad would the drift be if i were to buy the carbon express cxl 2 arrows. And i would get the 150 for my mathews swithback xt that i use for shooting both indoor and outdoor 3D and some paper. I want to shoot a light arrow and the 150's only weigh 6.2 gpi and i was also wondering how durable these arrows are? i only pull 47 pounds and a draw length of 26 inches. please tell me if you know anything.