[quote]1)are you saying you could NOT get the 340 spine class shafts to give you a bullet hole?[\quote]

no. I just shot the shafts knowing my bow was centered. The shafts posted were the ones that shot bullet holes without any tuning. The 340 shafts had a .5" point left tear. It wouldn't have taken much to adjust that in.

[quote]2) was all testing done out of the Hooter Shooter? or was a person shooting the bow?[\quote]


I find for paper tuning I get as good of results shooting the bows myself. If I am having trouble getting a good tear and everything else is correct(the problem seems to be me) I will drag out the shooting machine. When I am tuning the arrows I definatly use the Hooter Shooter. With a little twist of the nock here and there I have gotten same hole groups out to 40yd with that thing. Granted I was shooting ACE arrows that were perfictly matched for weight.

[quote]I'm a little confused. It seems as though you are using a universal spine rating system for all of the arrows you have tested. What is this system from? I can't really follow your results since I'm not familiar with it, but I am very interested in these types of tests. Thanks in advance for any "enlightenment" you can provide.[\quote]

It is my own experiance backed by alot of tinkering. example
Matrix cut to 27.5" and a 100g tip(460 spine)
ACC cut to 27.75" with a 125g tip(440 spine)
The shafts don't have the same spine rating(ACC being slightly stiffer) but the ACC is slightly longer and sports a heavier tip(which weekens the shaft). The shafts act the same comming out of the bow. As far as some guide I don't know of one. I do use Archers Advantage to play with setups then if I have time I test the results. If you take care to enter the data as correctly as possible the program will give you supprising results compared to real world observations. You have to be careful with software it is only as good as the data you enter.

>>>----Andrew---->