ORIGINAL: tnichols
Atlasman
I switched from GT 5595 to GT 7595 with feathers, now my arrows are spined correctly for my setup, FOC is at 10.5%. I paper tuned and I am getting bulletholes. Grouping at 30 yards is excellent. My only grip is that the arrows are corkscrewing. It is really noticeable from 30 yards+. When your arrows were corkscrewing which adjustment did you make first to the WB. I have the deluxe so I can adjust either way. I like the groups but like you I want excellent arrow flight.
I saw corkscrewing arrow flight when my rest was offset in BOTH a left and down position. I think it must be a combo of low or high AND left or right.
Up and down adjustments will fix porpoising and left and right will fix fishtailing. A combo of both should fix your corkscrewing.
I adjust my rest until I get perfect straight arrow flight. I can shoot bare shafts at 30 yards that fly like darts. They do hit a little tip low but that is due to weight of tip pulling the nose down.
I get my arrows flying straight off the string and I am done.........I don't play with my poundage because I am comfortable with it now and my broadheads group awesome when arrow flight is perfect.
I am sure many people fine tune more then I do...........but as long as my arrows are coming off the string in a straight line to the target I am happy.
Good Luck