Same arrows different flight??
 

I'm using the carbon express predator II arrows and I noticed that one or two arrows have a whirling action when shooting and the rest don't. What causes this? Is it just side effects of low end arrows or is something wrong with the arrow or vanes? Or is it something with my bow even though the rest of the arrows fly true?

Possibly a spine inconsistency between arrows? Or damage to arrows?

I think I fixed the issue. I had a new drop away rest installed by a bow shop about a month ago. After my first post I went to shoot some more arrows and see how many were bad when I noticed a clunk and after my first shot and a quick investigation I found my rest was loose! It was jiggling and I could move the rest up and down. So I leveled it back out and tightened it up and so far so good.

Im curious if your rest fixed the issue. I practice with the same arrows and I occasionally get a bad wobble with some arrows. Seems like 1 out of 15 arrows has consistant bad flights, I just figured it was a manufacturing flaw.

It could still be the arrows and I just didn't shoot a va one again but I didn't notice it after I fixed the rest and took about 6 more shots.

Hard to tell without being there, but I would make sure you are tuned 100%. I have bought arrows that weren't up to par, put those aside and make them so you know which ones they are, then see if the rest of them fly right, if so it could just be a bad batch you have. Good luck.

Did you check to make sure your not getting any vane contact with the cables? Usually you have to have the nock turned just right to get them to clear the cables and the rest.

But i'm assuming you already know this. Pretty basic stuff.

Yea I checked and I shoot cock feather out so I have enough clearance for my cables. Not sure if it's completely clearing the rest but wouldn't that cause all arrows to fly weird?

I do not believe nothing would be touching your arrows. With a drop away it should be well out of the way once your vanes reach where the rest was. That is unless your rest is set wrong and even then I have doubts about anything touching it.

Sometimes as you get tired during an extended shooting session your form will break down causing an erratic arrow flight. I have noticed that after about 25 back to back shots, I will start to torque the grip if I don't take a little break.

NC

You are 100% correct Rev!! I mark all my arrows with a number, then and or when I begin to experience any abnormal flights, I note this and put them aside and find out why. Perfect example. I just bought a dz of GT Velocity XT 400's. Cut them. Weighed them. Found 2 that were 10grains heavier then the others. Go figure?!?!?!? :confused0024:
I then weighed the inserts and all was good. My GrimReapers to be used. All good. I took those 2 and cut off an 1 inch and was close enought to put me with in 3-5grains of all total. 345grns average total with 100 grn BH on my electronic RCBS powder scale.

Drop away rests you shoot the arrow cock vane up. I agree your form could slip a little as you get more tired. When you have an arrow that doesn't seem to shoot right, mark it and shoot it again! Mark it so you don't know your shooting that same arrow until you pull it from the target. This will give you the most unbias results. If you know which arrow shot bad before you shoot it again you will tend to make sure your form is perfect. If it continues to shoot bad you'll know it is the arrow and not just you.

number your arrows , if its 1 or 2 of them , the same ones doing it all the time , it could be many things , fletching clearance , spine , and nocks , are 3 common problems , nocks and fletching can be replaced , if its a spine issue , ditch the inconsistant ones and get new .