WakePraySlay
Lil-Rokslider
Ha yes parachuting. Too much helical and offset will cause the back half of the arrow to displace and push more air while the front half tries to keep up causing the back half of the arrow to “over spin” and create a parachuting effect. Remember all arrows are not perfectly straight so while in the air you’re going to have flex and small wobble which will only increase due to gravity and friction caused by an aggressive offset/helical. In a sense you are correct. It does take a while for the effect to happen mostly past 70 yards. That’s why I do suggest with a 4 fletch with a low profile vane and a low degree of offset/helical."Parachuting"...Ha!........What.... on those slightly longer 150yd shots?
OP your existing arrow is fine. All that work for 40gr is a total waste of time IMO.
I'm not a fan of the Shuttle T's due to small size and crummy steel...but even those will work.
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