arrow length....longer vs shorter
ok so i am just about ready for a new bundle of arrows. i am shooting a switchback at 70lbs and 28 inches with a loop and peep. i started shooting carbon express maxima 350's at 27 3/4" with 4" helical feathers. i shot up most of those and am now shooting some goldtip hunter xt's 5575 at 27" with 4" helical feathers that i had leftover. should the length difference of 3/4" make a difference (seems like it should, but i don't know why)? my broad heads were flying good with the both shafts out past 40 yds. which length should i go for? Both leave pleanty of clearance with my rest. Is one going to give me more speed (the shorter lenght?)?
i am confused now. seems like there is a lot that goes into the "mechanics" of an arrow.
thanks folks