Bowfanatic, I have to agree with this statement. Ever since I've built my spine tester, I've been a bit amazed at the variation in spine among a dozen carbons. Most dozens will show at least a .030 difference between the stiffest and weakest arrow in a group (that's a lot). I've measured some dozens where the vaiation was .065. That's incredibly huge variation, that can't possibly result in a consistant shooting dozen. If you're shooting borderline spined arrows, you are not likely to get the same point of impact from such variation, when shooting broadheads. I have found certain brands to be less consistent than others and have found the lower tolerance for-straightness arrrows to be less consistant than the higher end ones in most cases. This makes sense that a straighter arrow is also likely to test more consistant with spine. Aluminums shoot so good, because they are not only very straight, they are very consistant with spine. Seldom can I measure more than a .005 difference in a dozen.

I have managed to get great broadhead flight from my arrow building. My procedure to build an arrow is the following: Select a shaft that is slightly too stiff for the cam and poundage I'm shooting. I then cut from both ends at 90 degrees. I spine test, marking the stiffest side with a marker. I cull any arrows falling below a particular spine (too weak). I then align the cock feather with my mark. This way, each arrow has the stiffest side flexing the same way. Then, I attach feathers with a strong helical to get the arrows spinning and attach a broadhead heavy enough that I get an F.O.C. of at leat 10%. With this method I've gotten great flight from even cheap arrows. The difference is the number of arrows I keep out of a dozen. I've increased my percentage of "keepers" from all dozens, but the more expensive arrows (at least from some brands), have yeilded higher numbers of "keepers". This is the reason I have found them to be worth the price to me.