I own a bowtech justice 30 in draw at 60lb (dealer said 63 max). So now I am trying to select my gold tips for hunting> I am try to get as close to the IBO as possible 296-308 and they say 6 grain per inch, my guess is just the arrow shaft. But the problem is when on gold tips web site for my draw and pounds they say use the 5575 but the grains are 8.2 and the 3575 are 7.4. So I am not sure how to understand to differance in specs and what would work the best .

You need 5gr. per pound of draw. Total arrow weight: point, insert, shaft, fletchings, nock.
Add the weight of all you components together for a minimum total of 300 grains or 360 grains for 6gr/pound

It doesn't matter how fast the arrow is going if you can't hit what you're aiming at. 3555's would be way underspined for your setup and you'll never get two to shoot anywhere close to the same place. You NEED the 5575's. The difference between 8.2 grains per inch and 7.4 grains per inch is a mere 24 grains on a 30" arrow. Something like 3-5 fps.

If you simply MUST get down to 5 grains per pound then you need to select a different brand. High Country is putting out some ultra-ultra light arrow shafts for guys who like to dry fire their bows. Take a look at them.

Arthur P,I loved your responce in reference to the High Country Cabon Revolution Speed-Pro's,they would be like dry firing your bow.szap,you definately need to go with the Gold-Tip 5575's...Bob