What split??

They are Binary Cams.

I know I talk out my rear all the time on here and don't know jack according to some on here. But the 400's are right on the money if his arrow is the same length as his draw length. If it's shorter it's stiff. So, why do people keep telling him to go to an arrow that would be way overspined for his draw length.

He only has a 27.5" draw length. If it were longer he wouldmight needa stiffer arrow. The wrapshelp stiffen the spine. Again, I don't know jack.

Even with my draw length the 340's would be on the stiff side with 100 grain heads.

According to Archers Advantage his arrows are too weak.

Even at 27.5" draw 27" arrow lenght with a 100 gr tip and that was without the wraps.

Add the wraps and run again. Adding weight to the back of the arrow stiffens the spine My numbersaccording to OnTarget2. (.4117) Although, I ran it without wraps and the arrow is still stiff at 70 lbs.(.4055)with a 27 in arrow.

The arrows are not the problem.

If they were, I doubt I would have had my bow tuned as well as I did before the string replacement.

How could replacing the string suddenly cause an arrow issue? I had the bow tuned extremely well beforehand with the exact same arrows.

Your problem is scaring me with replacing my string!!!! My bow is shooting holes right now and the thought of battling a problem like yours doesn't sound fun.

I'd go with what Len is saying about the strings. Try another set and see what happens.Or, put the old set on if they aren't in a dangerous condition and see what happens.

When you are dealing withitemsthat are measured by the 1/32" one small thing can cause a big problem.

My thought was that with better string you get more FPS which would mean a weaker spine with the same arrow. That is probaly not the case but that was why I said arrows. If you get 10 more FPS and the arrows are OK but close to weak the extra FPS may make a difference. Although with my limited knowledge I would not think it would make them go all over the place, just make them a little bit off.

ut oh my mistake , these things just keep changing

Arrow is definately on the weak side, but not enough to cause a significant amount of issues. If it was me, I would definately move up to 340's, especially with broadheads or drop about 4lbs on the bow.

Negative, good buddy.

I've already spent $120 on these. I'm not spending another $120 because my arrows may be a little weak.

They tuned perfectly before.