I may hunt with 3 different bows during a season, so I may have to use 3 sets of arrows, depending on what bow i'm using, then again, all 3 bows may shoot all the same arrows....it all depends on the bow.
If I am tuning arrows to any bow, I start with full length arrows, then cut off 1/4" at a time, maybe change tip or broadhead weight, until that particular arrow shoots well out of that particular bow.
I couldn't care less how much EXCESS shaft I have, or what other folks have to say about my arrows being longer than necessary, as long as it shoots like I want it to.
Isn't the object of the game to hit what you're aiming at, and not trying to please others that question why your arrows are soooooo long.
Shoot what works.