wow, just re read what I posted, sounds wierd hopefully you understand my rambling lol.

An arrow spined in the 60-65's at 30"es would be equal to a 50-55 at 28.

You will find a pretty wide range of arrows (depending on bows of course), that fly good...there will be one, or a very small window of arrows that flys perfect. The less center shot the bow is, the more criticle the bow is with arrow spine. Also form, the better your form, the more you can get away with as per spine. Guys with really really bad form seem to shoot some heavy spined shafts. The deal is, whatever you do, do it consitently. Reputition is the key to being a successful bowhunter/target archer.

Going by your numbers, the should have shown a little weak. DONT change it if the fly good. Your first go around you may have been close but not on for spine....you might have just found it by not knowing and leaving them an extra inch longer then you really needed. One other thing to consider....when you do find something that flys good, dont forget about arrow weight. It plays into how an arrow will ACT coming out of your bow. Notice I didnt say SPINE. I am not sure how much total weight will effect an arrow but I do know it does. Start jumping weights and you could start seeing problems in the fine tuning section that you'll see more so with broadheads then field points.





I'll try and say this right if I didnt before.

For every inch less then 28 (27 and less) you are adding spine to the shaft in 5lb increments per inch. ie. a 55lb shaft 28"es long cut to 26"es would spine out at 65lbs.

For every inch longer then 28 (29 and longer) you subtract spine by 5lbs per inch. ie. a 65lb spine arrow is left 30"es long, would be equal to a 55lb spine shaft at 28"es.