a few days ago i superglued some inserts into some uncut GT 400 arrows and shot them a little bit the arrow was 50 grains lighter then my 300 shafts and they grouped 3 inches high. someone had said that spine isnt too important with carbon, and from what many have said ( on the good ol' internet ) :p is that the thing that is most important is the arrow being correct wt to avoid dry fire effects to the bow so does this hold true? should i focus on weight or spine or both ? atm, im shooting 400 shafts cut to 28" and an extra 100 grains inside the shaft up front, my grouping at 30 yards is under 2 inches( well placed shots) i shot the uncut shafts from 40 yards and i was getting under 3" groups with a 100 g head threw a practice broadhead on and nothing changed. i feel im at more of a risk shooting too weak spine, 5 inches is a lot when it comes to arrow shafts :p
Spine is as critical as it gets. Under spines arrows are just flat dangerous. I've seen them break at the shot. A properly spines arrow is important. And under spines arrow flexes too much and won't recover before impact. And over spines arrow literally wants to flip over and fly nick first. It won't though because there is too much weight up front, but they won't fly good. It is, however, better to be a little over spined than under spined. And consistency in spine from arrow to arrow, and within each arrow, is where it's really at. That's what truly deprecates expensive arrows from cheaper ones.
I recommend that you check out the arrow charts from Easton, gold tip, carbon express. Even a program like TAP will help you calculate proper spine for your set-up. Maybe call a pro shop, too.
Spine is of the utmost importance but it isn't as critical with carbon as it is with aluminum. That may be what they meant Sent from my DROIDX using Tapatalk 2
Yea I agree with these guys. spine is crucial. Too stiff of a spine can effect your accuracy. The arrow needs enough flex to allow it to stay on target. Too weak of a spine and you could have pieces of carbon in your hand. As for arrow weight, If you have the right spine for your bow's weight, you should be set. I personally like the heavier arrows. They will drop a little more but they pack a bigger punch than lighter arrows.
cool uys thanks, my 400's are cut to 28" and i only have 100g upfront, they group really well even in the wind. if i could get away with shooting uncut 400 it would just save me from haveing to cut them, but i enjoy using my left hand too =] hah thankyou all!
