Well see there, I just learned something from this discussion....Very cool....That there is some useful information.

To confirm what tony posted.Thanks for that,I couldn't remember for sure.28" is for spine deflection.


I figured I better check my arrows ifI am saying that they are as close as advertised or closer.


Well out of the 9, 3-39's I have and USED for 3 seasons and have shot many targets and a few deer.They ALL checked dead zero runout when spin tested and the spine deflection was within .005,except 1 and it was .007.The spine tester was a crude one and I suspect if I had a good one,they might check even closer,but remember,they have shot deer and logs.[](I don't want to talk about that one)[:-]

They were all checked at 26" centers.

Use what you like,just don't get caught up in the numbers game.Just choose a quality arrow.Anything closer than .003 should be great for hunting.



My arrows were seconds,they were cut shafts and sold at a discounted price from the factory.

Next week when I go to the shop I will check to see if they are within "factory specs" for straightness, and I will check spine again with actual numbers for you on these tolerances. We have an arrow straightener, and a spine guage that measures over 28". We also have ACC's at the shop new in the package that I will do the same with. I will say that even Easton Cobalt X7's that I have put on the straightener that were brand new were NOT withing advertised straightness tolerances. Also, keep in mind, each of the arrows of mine has 2500+ shots on them and countless hits in the back end, they are only a year and a half old or so but have more shots on them than most people will take in 4-5 years.

My point is that the pro series GT arrows are as straight as they need to be for someone to shoot world record scores in just about any type of competitive archery, and certainly straight enough for the average guy to use hunting and in the backyard. They are also lighter, cheaper, and most importantly have a MUCH better component system which in my opinion makes them a better option.

Don't be confused with the fact that I am on GT staff. I shot nothing but goldtip for LONG time before I got on staff and I have access to just about any arrow I want for any venue of archery for cheap enough to get what I really want. I shoot them because I like them, and I believe in them. The only thing I don't like about them is that they have a bit of work to come up with something comparable to a X10 or CE Nano for FITA, but I only shoot one FITA event a year so it isn't a huge priority for me. If Tim G. can shoot a 1396 on a FITA face and take out Cousins and his X10's at 90 meters I am sure the GT's will work well enough for me and my shooting abilities.

When I bought my ACC's 3 years ago,I was puttingup to1000 arrows a week through a bow.Atleast one of them.


These arrows have been shot a lot.Just for some reference.


My biggest reasonfor not choosing goldtips was because they really didn't have anything that spined RIGHTfor my lower energy setups.They may have now,but I quit looking at them when they moved.I do like the pin nock system.BUT,I am having NO problems with the g-nock,uni bushing system.



I would be willing to bet that there are a few world records that have been shot with the old,outdated ACC technology.


Check your arrows only if YOU want,I would be interested as would othersbut you need to prove nothing to me.

I just saw something,the Gold tip Pro 22's are +- 1 grain,the ACC's are +- .5 grains.The ACC's have tighter tolerances. SEE HOW SILLY IT IS.