Not that I am a speed freak well I some what am. I am just wondering if you fletch a carbon shaft with a 6 degree right offset how much speed will you lose over fletching them striaght. I have both both style of fletchers but no bow to test for myself my Allegiance has yet to show it's self. It's been over 2 months but I am hangin' tough. Also who much more forgiving will the 6 degree offset be over the straight? I have never used a 6 degree offset before.
And I forgot the add I will be shotting a MZE with exspandable broadheads.

The speed difference will be negligible right out of the bow. Somewhere down range the offset arrows will be somewhat slower due to rotational drag, but you need that rotation to stabilize broadheads for the same reason that a rifle barrel has lands and grooves to spin a bullet.

I go with helical myself, not sure how many degrees.
It's the Bitz helical clamp.

I'm compiling speed data right now, in fact. It's not my primary concern, but if I'm going to make choices that sacrifice speed, I want to know how much I'm giving up, and how it affects my trajectory.
I'm checking 5" vs 4", offset vs helical, feathers vs vanes, and several different weight shafts.
I'm a doubting Thomas, and I need to see it for myself.
I figure if I'm going to be sharing info with other archers, I want to be speaking from my own observations, and not just repeating what I've heard.

With what I've seen so far, BG is right on.
Two indentical arrows with 4" feathers (one helical, and 1 offset) shot exactly the same with the chrono right near the bow.
For that matter, the 4" helical vs 5" helical shot with 1 fps of each other.

Don't worry about the 1 or 2 fps downrange. Keep those BH's steady with the offset.
(I'm even considering helical because I release with fingers and want more forgiveness in case of a bad release when my hands are frozen.)

Bulzeye, I had the other post first. I knew it. You do shoot fingers. In that case a flipper is OK. LOL. No offense guy.

BGfisher you crack me up.no affence to the finger shooter I shoot fingers for a long time and killed many deer.

How do you offend fingers shooters by telling them they are the best of the best?

I would personally go with as hard a helical as possible. I put the hardest helical I can fit on my arrows. I too use the Bitzenburger jig.