100 or 125 grains to get good spine and FOC
 

I'm about ready to get some new BHs and think I want to go with 125 grains but am not sure.

Heres what i got,
Mathews DXT 29 inchdraw 70 pounds Gold tip Pro about 28inches long with blazer wrapand 3 Blazers (think thats all youd need)

Any way i ran some numbers through on hunters friend website and it said my FOC is 11% with 100 grain tip and 13% with 125, both sound like what you want i think it said you want 8-15% somthing like that, so that looks good. what im wondering is a bigger tip going to make me a little under spined or is that not enough to make a difference?

My other issue is Ive been eyeing up those rage 2 blades but have yet to see them in 125 grainwhats up with that?If 125 grains is going to make me underspined and not 100, ill go with the rage 2 blade. And if 125 is good and you cant get a rage in 125 grain i'll probly go with a slick trick or muzzy fixed blade.

What do you guys think?

Thanks for any input

Brandon

RE: 100 or 125 grains to get good spine and FOC
 

You didn't state what the spine of your Gold Tips was. I'm sure others will disagree but I have honestly never seen 25 grains make that much of a difference to the spine of an arrow so I'd guess that you'll be fine unless you're right on the edge of being underspined now.

RE: 100 or 125 grains to get good spine and FOC
 

Oh yeah duh!

theyre 5575s

Sorry

RE: 100 or 125 grains to get good spine and FOC
 

Ok so if im spined alright what would you guys prefer to have 11% or 13% FOC? or is the difference going to be negligable also?

RE: 100 or 125 grains to get good spine and FOC
 

thats my question also

i have 13.28% foc and i was wonderin whats recomended..

i had to go with 125 grain tips but my dw is about 60 lbsso i gotthe 5575's expeditions... they are spined almost perfect...

RE: 100 or 125 grains to get good spine and FOC
 

13% FOC is perfectly fine for a hunting arrow. The general rule is 10-15% for hunting purposes.

RE: 100 or 125 grains to get good spine and FOC
 

(not to hijack ur thread) ^^^ i got my instinct friday and got it setup sunday, man this bow is sweet, its set at 53 and my DL is 25 inches man its smooth quiet and alot faster then my last bow (flatter shooting too)

RE: 100 or 125 grains to get good spine and FOC
 

Hate to be the bearer of bad news but even with 100gr heads the 5575 are way under spined at your current set up.

The 5575 are a 400 spine shaft you will probably need a 7595 or 340 spine shaft.

RE: 100 or 125 grains to get good spine and FOC
 

He's not way underspined. He's only one block off.

http://www.goldtip.com/downloads/2006sizing-chart.pdf

That said I'd go with the 100's. You'll be fine.

RE: 100 or 125 grains to get good spine and FOC
 

HEY AUSIE GUY ARE YOUSAYING MY SETUP IS UNDERSPINED OR OFFSHOOTBOY?

RE: 100 or 125 grains to get good spine and FOC
 

Yep I think he was trying to say under spined! Ausi has or is inprogress of building me some archery ammo and the FOC is up around 19-20%! He knows what he's doing so I'm trusting him...if they wobble like a fat woman at a buffet I'll cry and just blame it on my poor shooting.:DI can already prepare to adjust my sights since I'm shooting stock 340's and some 400 spine with 100 gr field points,but I'm still learning and hoping to select BH's for hunting soon.

RE: 100 or 125 grains to get good spine and FOC
 

Ausie-guy is correct that the 5575's are underspined . Also adding 25 grains to your point does change your FOC quite significantly actually ,2.3% more . Here is what OT2 showed and this was just with the 100 grain points so the 125's made the spine even worse Here is a pic

RE: 100 or 125 grains to get good spine and FOC
 

Offshootboy is under spined.

RE: 100 or 125 grains to get good spine and FOC
 

Those charts are only a ball park figure and IMHO they are totallymissleading.

I had a gentleman pm me yesterday about his set up 70lb, 27.5" draw and 27" arrow (5575),when I ran his numbers the spine was weak.

I suggest that if the chart say's you need a 5575 (400 spine) arrow go to the next stiffest.

This is one of the reason most people have trouble tuning their bows.

RE: 100 or 125 grains to get good spine and FOC
 

Couldn't agree more Aussie. Especially if you are shooting a drop-away. What I have found a drop-away rest prefers a stiff spined arrow.

RE: 100 or 125 grains to get good spine and FOC
 

Why don't the arrow companies include a disclaimer in their charts?

Thanks for the PM help AussieGuy!

RE: 100 or 125 grains to get good spine and FOC
 

Alright Thanks guys I guess Im going to have to buy some more arrows.


How can I get some software like that so i can run some numbers before I buy somthing that aint gonna work again, or at least I know it will.

The arrows dont fly that bad, I robbin hooded one on sunday, that was my first time ever.

RE: 100 or 125 grains to get good spine and FOC
 

No worries Kevin;)

Good question I just wish I had a good answer.

RE: 100 or 125 grains to get good spine and FOC
 

This is the only place anybody refers to a sizing program,you go to most bow shops they scan through a chart and sell what they have in a box,if it wasn't for pictures they couldn't sell anything! Here you get practical advice and multiple opinions to help guide you!

RE: 100 or 125 grains to get good spine and FOC
 

I use Archers Advantage

http://archersadvantage.com/AdPages/AAIntro.htm

RE: 100 or 125 grains to get good spine and FOC
 

Here is the one I use , On Target2. You can download it free for 10 days before you have to decide if you want it www.pinwheelsoftware.com

RE: 100 or 125 grains to get good spine and FOC
 

OT2 shows my set-up to be 'optimal'. Go figure.

06 ally
27.5 speed draw
27" 5575 GT pro hunter
100 gr tip

RE: 100 or 125 grains to get good spine and FOC
 

I guess I've been following some bad info, causeI've always been told (read/heard) that the arrow charts were on the stiff side?

RE: 100 or 125 grains to get good spine and FOC
 

Ok I downloaded the on target software and made everything as close as I could, it doesnt have a DXT, but i put in all the same number as archer 2 did and i dont get the same answer, is it because i cant enter it as a dxt or is it just because its the free trial, whats the deal.

now i dont believe what this is telling me as im ready to buy new arrows, but i dont want to have to buy more arrows again and again guess im gonna get the software and hope the dxt is a choice

im getting a new cam to get my draw lenght down to 28 inches how far off will my gold tips be once i do that?

RE: 100 or 125 grains to get good spine and FOC
 

What arrows are you planning on buying?

RE: 100 or 125 grains to get good spine and FOC
 

Offshootboy, the Free Trial wouldnt have the 2008 updates in them. That is why it doesnt show the DXT as mine does and that is where the discrepancy is coming in.