I have been shooting 550 spine x10's for 2 seasons now and they tune perfectly for my uukha box, 29.5" arrow, 41b OTF. From the Easton chart they are T7 and should be slightly soft, but aren't.
I wanted some aluminiums for indoors as not wanting to damage x10's indoors. Spine shoice seemed very simple to me, pick the same spine group as the x10's..... so I bought a set of X7's in 2114 size, which should give a spine of 0.51" compared to my x10's of 0.55"
i fletched the x7's with 3" AAE vanes, and fitted Easton superlite nocks and nibb points (78) grains.
I set them up as normal, centre shot with the point just to the left of the string, sight pin centred over the shaft, then changed button tension to move the fletched group into the centre.
tried some bare shaft testing tonight, and the bare shafts are level with fletched, but off a Portsmouth target to the left at 20yds, indicating they are way way too stiff!!!!
also, i am getting vane contact on the shelf of the riser, leaving a red streak of plastic.
So, has anyone else had such different results with arrows in the same T group?
how much difference would changing from 78grain nib points to 100 grain bullet points make to the tune,
and would a stiff arrow result in vane contact on the riser shelf? I was expecting to have to alter the nock height, but the bare shaft shows it's fine.....
I wanted some aluminiums for indoors as not wanting to damage x10's indoors. Spine shoice seemed very simple to me, pick the same spine group as the x10's..... so I bought a set of X7's in 2114 size, which should give a spine of 0.51" compared to my x10's of 0.55"
i fletched the x7's with 3" AAE vanes, and fitted Easton superlite nocks and nibb points (78) grains.
I set them up as normal, centre shot with the point just to the left of the string, sight pin centred over the shaft, then changed button tension to move the fletched group into the centre.
tried some bare shaft testing tonight, and the bare shafts are level with fletched, but off a Portsmouth target to the left at 20yds, indicating they are way way too stiff!!!!
also, i am getting vane contact on the shelf of the riser, leaving a red streak of plastic.
So, has anyone else had such different results with arrows in the same T group?
how much difference would changing from 78grain nib points to 100 grain bullet points make to the tune,
and would a stiff arrow result in vane contact on the riser shelf? I was expecting to have to alter the nock height, but the bare shaft shows it's fine.....