Any advantage to certain arrow length?

When someone wants arrows from me, I have two requests. 1. they absolutely have to be correct and honest about their draw length. 2. they have to like wood arrows.  Any BS and it's no deal.  I like to shoot wood arrows as short as possible.  I can hit the spine most of the time dead on.  If there is a lot of arrow sticking out, it adds a variable that is impossible to predict as every bow reacts differently to extra arrow length and variance in an individual's release. If you like to play around with different inserts, adapters and different wieght heads on carbons, you will eventually find what works for your particular release tendancies and bow.  I like a particular weight head out of a variety of longbows, I do not like to spend a lot of time experimenting. The advantage is that I can fairly quickly predict how my different bows will shoot out past 30 yards, if I start mixing it up to much, the guessing game never ends.

[Nate Steen .]

The few times I tried carbons I was amazed at the spine range...55-80# (or similar) was marked on the shaft....easy I thought.  I cut the shaft to 27" bop and added the insert and tried a couple of point weights and bingo...done.  arrow between 550-600 gr. flying great.....no bare shaft tuning, no making it too difficult for my pea brain to understand.

Maybe I'm in the vast minority but I think the old timers found this to be true also....the fact that I can group arrows of 15# spine range with varying point weights and 100 gr. weight range  into a 12" circle at 40 yards...its not rocket science...but then I never shoot an arrow until it has feathers on it...
one past national archery champ from the 40s bemoaned how "modern" target archers were constantly discussing how to get good arrow flight and what was the best way to tune instead of "just getting a stiff arrow and learning how to shoot it"....hmmm sounds like he was talking about nowadays....

[Orion]

Right on, Nate.  I've been overspining woodies for many, many years.  Have done the same with the few carbon brands I've tried.  Cut to length, fletch and shoot.  May have to go up or down 20-30 grains in point weight, but that's about it. Actually found carbons to be very forgiving of a pretty wide range of point weight.

[shedhunta]

If you are a gap shooter the longer arrow makes your point on closer.  I started shooting with 30.5 full length gold tips and now I try to keep all my arrows that length.  My brain is trained for that length.