I know this is open to personal interpations, but I was wondering if there is an accepted grouping standard for arrows. By this i mean at 30 yards the groups should be within what distance, 40 yards, 50 yards, 60 yards. I am always striving for perfection with my groups but don't know if i'm beating myself up over tighter groups. I shot a Bow Tech exteme set up for huning. Any imput?