have any of you guys tried these? how wuold you know what spine to use where gold tip arrows are some of the lightest available. thanks

I use the 3555 full lenght shaft with a 100gr brass insert,125gr and 3 white right wing feathers total arrow weight is around 515gr.

They shoot real good out of my TD LB 52lb @27, my RD LB 50lb @ 27" and my straight limb LB 50lb @ 27"

I am shooting the GT5575 Trads cut 30" with a 100gr. brass insert and 125gr, braodhead/fieldtip. Using 5" feathers with white wraps. Total weight is 530 grs. and I am shooting them out of a ACS CX longbow which is 58#@28".

I use em. I have mixed results. Fortunately, I have a bunch of aluminums of various sizes. So when I get a new bow, I will play around with different aluminums, and different points from 125gr to 250gr. When I find one that flys good, I go back to the computer and use Ontarget to find out which length GT's and wieghts work. It usually works out well.

I've used the 5575 Nugent Style with a 67# Bob Lee and had very good results. I use weight tube that were 5 grains per inch, a 50 grain insert, and 200 grain heads. I had FOC around 26% I believe.

my samick is only a 45# @28". im not sure how that computes out for a trad bow. another question is, are you fletching these w/ an offset or helical or just strainght?

Helical

I shoot 55/75 with my Bob Lee 53Lb @ 28" They are 28" long with 90grains of GT weightsup front and 100 grain tip. 485 grains total with 4" feathers. My Rio Bravo is 55lb @ 27" and shoots 55/75's 29" long 110 Grains of GT weights and 100 Grain tip. 517 grains total.