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firecat1
09-09-2010, 03:10 PM
I have an 08 Firecat, 60# and 27" draw, my arrows that I bought last year I think are the wrond length and wieght, they are Easton A/C Super Slim, 340's at 10.7 grains per in. the length is 29" and I shoot a QAD pro hunter drop-a-way. What is the proper arrow for my set up, I am having some erratic flite issues. Any advice?

rock
09-09-2010, 03:30 PM
i think you should be at 400spine arrows 340 a to stiff for 60 # 27 " but double check with easton shaft guide

Coop
09-09-2010, 03:38 PM
http://www.eastonarchery.com/products/selection

Destroyer
09-09-2010, 07:21 PM
I am having some erratic flite issues.

What issues exactly? Could be collisions, tuning, your form, need more info please.

On spine, your 340's @ 29" with your 27" draw aren't to far off, maybe a bit stiff. Try going to a heavier point and see what happens.

firecat1
09-10-2010, 03:17 AM
porpoising, they seem to be maybe be too long????

bfisher
09-10-2010, 12:12 PM
Their length should not contribute to your porpoising problem if they are spined right and the bow is set up properly. However, considering the rest you are using you could easily shoot a 27" arrow and that would call for a 400 spine; maybe even a 500 spine. Personally I'd go with the 400 because the 500 would be very near the upper end of it's range for your setup. The porpoising is most likely due to a nocking point that is not set correctly, fletching contact with the rest, or cams out of sync.

I am shooting a FireCat set at 27 1/8" draw right now. When I was shooting a 500 spine about the highest weight they would fly well at was 63# but that was with an 80 grain target tip (no insert). That would correlate to an insert and 65 grain field point or broadhead although I did get good results with a 75 grain InnerLoc head.

Destroyer
09-10-2010, 07:40 PM
Try raising you knocking point. Like bfisher stated, the length won't effect it.