You have gotten good advice so far. It is definitely harder to shoot well at longer ranges than up close. IMO, you really have to relax, and squeeze off the shot, while concentrating on your aim. That said, I have found that " bad" arrows, that could be out of spec. or worn carbons, or aluminum arrows that are somewhat bent, or have nocks installed carelessly, etc. often will group acceptably up close, and the groups " fall apart" when shooting at greater distances. In addition to checking your form as suggested, I would want to know how old these arrows are, and have them checked for straightness by a pro shop. Trying 100 gr. tips might also help some.