Arrow weight/spine help

[tx07]

Bare with me a minute to explain what I'm talking about.

Currently I shoot GoldTip XT 7595 arrows that cam with my bow, from an individual.
I messed a few up and was looking at new ones.
So naturally you would look at a chart. Well I noticed the chart says the 5575 draw range of 64-70#.
Here is the deal 5575 gpi is 8.2 & 7595 gpi is 8.9
My arrow weight now is 383. But with the 5575 they could be 364.1
That's 18.9g less.

How many FPS do I stand to gain doing this?
Also is this spine really safe for 65# draw by the chart?

[SPUD]

What's the arrow length??
What grain of tip?

[tx07]

27"
100g slick trick magnums

[SPUD]

According to GTchart, you are "overspined"

They call for the 5575 which is a .400 spine



you may get a 5fps going with that. I don't know. Only one way to find out. I shoot 7595 shafts bcs my arrows are 30 inches. You might be better off witht the 5575

Maybe somebody with On Target can get you better scientific data for you. I know some guys have here have it. Been thinking of getting it for myself

[tx07]

That's what I thought,
Does it hurt to be overspined?
Now to find out how much fps I would gain.

[ken]

You can be a little overspined and be o.k. It is usually better to be slightly overspined than underspined. I have the same draw length as you and when I shot 65#s I found that both 5575s and 7595s worked equally well.

20 grains should gain you about 6 fps. Rule of thumb is 3 fps per 10 grains of arrow weight.

[tx07]

Thank you ken.

[SPUD]

You can be a little overspined and be o.k. It is usually better to be slightly overspined than underspined.

With this setup, I don't think this is "slightly" overspined. It sounds like waaay too much

[Mike Javi Cooper]

pm me a number and I'll call you, so we can run the numbers through OnTarget2...

[tx07]

PM was sent and thank you allot Javi!!

[SPUD]

Let me know how it turns out

[tx07]

Well basically if it is shooting well with these arrows at 20 30 40,
Use the arrows till you need some new ones and get the others.
I get good flyte with FP and my BH since i use the slick trick 100g magnums.

[TEAM SHARK]

Javi:

Could you run some numbers for me? I shoot 70 lb. draw, 100 gr. slick trick, 27.5 inch arrows, single cam bow (diamond black ice). I am currently shooting red head "carbon fury" 6675, but I want to upgrade my arrows.

[Mike Javi Cooper]

Javi:

Could you run some numbers for me? I shoot 70 lb. draw, 100 gr. slick trick, 27.5 inch arrows, single cam bow (diamond black ice). I am currently shooting red head "carbon fury" 6675, but I want to upgrade my arrows.

Draw length????

[conroetomkat]

I shoot almost the same set up as you do. Mine came from the shop with a .350 spine but I soon switched to the XT 5575 and found them to shoot much better, especially as your distance increases.