I was shooting a 560grain arrow out of 58" BW PSA 54@27 and the arrow was not tuned it was shooting in the mid 170fps I bareshaft tuned the arrow and the longer arrow ended up weighing around 580grains and I consistently shot around 185fps. So more intersting data about what speed really is!!!!
Yep..Less oscillation, and wind drag on the fletchings.
Just curious were you shooting split finger or 3 under?
Rob..
Split fingers, can't aim with 3 under!