I've got a 30 inch draw pulling around 61# at that length. 5575's?
I'm pulling about 60-61# @ about 29" and I have some 5575's that are shooting ok but still need some fine tuning. Depending on how much overall weight you want and how much up front, you may be able to move up to a 7595. I plan on working on mine more in the next couple of days. I'll let you know what I come up with for a final setup.
really matters how much weight up front, fletching, cresting, type of bow, string type, etc. i would suggest you input your info ACCURATELY into the stu miller dynamic calculator. it will give you a arrow spot on or very close if info is put in correctly.
I concur with RUTANDSTRUT! Lots of variables, but if I where to take a stab at guessing, I would go with the GT Traditional 7595. Their spined @ 300, the pro hunters 7595 are 340, incase the trads 7595 are to stiff.
First of all after about an hour with a 61# bow I would be finished so I can only guess.Dont be in too big of a hurry to go with the heavy weight because experience has taught me lighter spines prove to do well when questionable . Get some various weight tips and do your homework.
if you havent purchased yet consider the beman mfx traditionals smaller diameter hidden insert. Just switched from gold tip to these and have been very happy. my 58 lb longbow and a 30" arrow takes the 400's I also use the 75 grain brass insert in the tip total arrow weight with a 125 grain broadhead around 550
MY guess is if you went with the beman you would need the 340s depending on how much weight you load the tip up with.
I'd probably go up to the 7595's. I shoot the 5575's at about 29.5" with 200-250 up front with my 28" draw in the 57-60lb range. I think you'll underspine the 5575's trying to get your GPI up to shoot at 60# with a longer draw like that.
But I do agree with the above post that slightly underspine is better than slightly overspine. If you're not afraid of loading up the front with weight go with the 7595's.