I started our bow season last weekend w/ 3 good arrows(figured if i can't hit it in 3 i shouldn't be in the woods). Well I dropped a doe saturday night ruining the fletching on that arrow. So I went to the local archery shop sunday and had them refletch all 7 of my arrow(gander mt whitetail series) w/ the same 4" helical vein, but they put the plasticy veins on instead of the feathered ones I had(they said they'de hold up better). Well I got home tonight and took some shots, and my broad heads are twisting in flight(cork screwing). I can literally see them inverting like an f-16 and they're grouping 6" high and 6" right. If i put field points back on, I'm dead on. What gives! My broad heads were dead on with the old fletchings! Do I need to have them refletch them back to the old feather type fletchings? My broad heads are Muzzy MX4's and I'm shooting the Mathews Switchback XT 60 lb draw w/ 29" draw.
I had the bow paper tuned when i shot leagues 2 years ago and never moved the sights after that(not even when i put broad heads on, they were dead on). So I know it's still tuned good. I'm leaning twords the fletching being the culprit, and that I need to go back to feathered 4" like I had????? The feathers are the ONLY thing that changed between Saturday when I shot that deer and tonight....
sounds like wind planning to me. if field points are dead nuts and broad heads miss. otherwise fletching contact with the rest.
There are alot of variables and differences in those two fletchings. Feathers have more drag than vanes. Old fletch was probably helical and new could be straight, straight offset, or helical. Odds are you don't have enough offset or helical on the vanes to prevent your bhs from wind planing. Vanes will be fine, if you have the proper offset for the heads you are using. I am shooting slick trick mags with a 2" vane fletched helical and everything is flying great out to 50 yds(as far as I can shoot).
I'm having a similar issue. Mine is, I recently got 1/2dz. arrows, did all the prep work myself. threw on some NAP quickfletch(s), 3 w/bh, 3 w/fp. The fp were dead on, the bh were 4" to the left. IDK what my issue was, but some of the quickfletch tore already...so i'm going back to my old setup (4" wraps with 2" blazers) to see if my issue was me or the quickfletch
Everytime you change something on your set-up something else is affected. It may be a slight change that is not noticed, but may be a larger change. You should simply try making a small adjustment to your rest to get the BH's and field tips hitting close again. Just because your bow was tuned 2 years ago, does not mean it is tuned today! Strings settle, creep, etc... and tune changes with the weather as well.
I had the shop paper tune my bow again. Fp fly great but muzzys still spiral. Tried a smaller bh with similar result. The shop refletched to a feather vain. I plan to shoot tomorrow and see what happens.
Still had problems after they tuned my bow and refletched the arrows. I noticed at home that if you held the bow sideways and set the dropaway rest up w/ and arrow the the arrow was not level. I took it back to the shop and had their best guy look at it(specifically asked for him). Found out my strings were stretched and my cams were not rotating fully at full draw. Had him put new strings/cables on and retune it w/ a d-loop. Shoots awesome now out to 40 yds w/ Rage broadheads. I guess everything just fell into place w/ my old arrows to make them fly good, and when they got refletched it just went to H*ll.
First things first, this is a FARCE!!! Only the actual shooter can paper tune that bow. Someone else tuning a bow is a joke, and a service that has been paid for far too many times over without the expected result often times as well. For the current issue, I'd suspect fletching contact. Not a problem with feathers because they just breeze by the contact, but a plastic vanes doesn't breeze by as easily, and the flight pattern of the arrow is altered, resulting in poor arrow flight. Worsening when you through a set of blades on the front of that arrow and expect it to be steered from both the front and the back.
Exactly this. Doug, I'm just going to stop posting anymore. It scares me that you read my mind so well.
You know what they say about GREAT MINDS!!! It helps to play a little technical helper while I'm not quite shooting anywhere near where I'd like to yet..... I got to put my nephew on with his bow and new arrows this weekend, after about an hour, we were ready to put him back in the woods again.... :D
