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Main Boards => PowWow => Topic started by: fido dog on January 14, 2010, 11:17:00 PM

Title: GT 5575 or 7595 for 57# Longbow??
Post by: fido dog on January 14, 2010, 11:17:00 PM
I'm able to purchase one arrow at a time from a local shop and another will strip the vanes and replace with feathers.

I bought one 7595 today, put a 50gr brass insert in and will pick up in the AM to try out. For a 57# bow do you think the spine might be too heavy (300 @ 11gpi)? At 29 1/2" It ends up being a bit more than 525gr.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: elknutz on January 14, 2010, 11:59:00 PM
I'm gonna guess yes unless you really load up the front.  It was to stiff for me with 250 total up front.  Your results may be different. Even the 55/75 will probably need plenty up front.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Ragnarok Forge on January 15, 2010, 12:00:00 AM
Yep,  Way to stiff.  Try something in 500 spine, or possibly even 600 spine.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: FerretWYO on January 15, 2010, 12:07:00 AM
I am going to bet way to heavy. I shooot 57lbs on all my longbows and recurves. I dont think that I could even dream of making that arrow fly. I have some Axis 340s that I shoot out of one recurve. I have thosse almost full lenght and and 100gr inserts.

I would try the 55/75. I can shoot those with the 50 and the 100gr insert depending on the length.

As said I would try the 400 range. That is what I am shooting.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: fido dog on January 15, 2010, 12:17:00 AM
Okie Dokie. That's kinda what I thought.

I'll pick up a 5575 tomorrow.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: joe skipp on January 15, 2010, 01:43:00 AM
55/75 with 100 grain inserts...125 grain broadheads, plus 30 grain broadhead adapter will work fine. Make sure you cut your arrows 1.5" to 2" longer.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Buckwheaties on January 15, 2010, 02:11:00 AM
Run it on Stu Miller's program..
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: fido dog on January 15, 2010, 02:16:00 AM
Thanks Woodie....got a link? =0)
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: cacciatore on January 15, 2010, 04:18:00 AM
I am of the same idea that with the 55/75 you can still have a lot of FOC with 57#.I use a 75/95 on my recurve 66#@29" and have 100grs brass plus 145BH,cut at 29 1/4.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: saumensch on January 15, 2010, 04:54:00 AM
I would also try the 55/75s , i shoot CX 340s wich are similar out of a 59# LB. that said, i am no expert by far and still struggling myself, so dont relly on me   ;)   .

Stu MIllers Spine calculator:
http://heilakka.com/stumiller/

as often stated , youll need excel or open office calc to run it.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: BigJim on January 15, 2010, 05:05:00 AM
I sell a pile of the gold tips. The 5575 is the  one that will work. If your long bow is not cut near center, you may need to go to a 3555 but not weaker.

bigjim
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Guru on January 15, 2010, 06:59:00 AM
Unless you plan on leaving the 55.75 real long and plan to hang  a bunch of weight on the end, they're going to be to stiff...

I believe with a longbow(probably not cut to center)you'll be far better off with the 35/55...I'd get both a 35/55 and  55/75 to try...
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Elkchaser on January 15, 2010, 08:12:00 AM
My arrows are about exactly like Joe Skipp recommended. I have 100 gr brass inserts, 30 gr adapters, and 125 gr points. It is the 55/75 cut at 29 1/2" and I draw just over 28". My bows are cut to center and they fly great. If not cut to center, you may need to add more weight, leave them longer, or go to the 35/55 as Guru said.
Ron
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: KentuckyTJ on January 15, 2010, 08:45:00 AM
I'm with Guru, you are teetering on the fence between the 35/55 and the 55/75 depending on your draw length and point weight.

What is your draw length? If you have a short 26-28" draw I'd bet the 35/55's will be the ones.

It's hard to keep those inserts in the GT's. You'll have to epoxy them in when you get the proper length figured out. Use hot melt to insert inserts at first while you chop the arrow down a 1\\2" at a time finding the proper spine for your setup.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: xtrema312 on January 15, 2010, 08:59:00 AM
I think you are kind of on the fence and it will depend on a few more factors.  Center cut, draw length, arrow length, string.........and what you want up front all makes a difference. Do you want a lot of FOC?  Also what kind of LB?  There is a difference between a straight limb and radical D@R bow.  More data would help.

I shoot 55/75 out of all my bows.  I draw a little over 29" and use a 30-31" arrow.  All my bows are cut to center then have a strike plate so about 1/16" out.  I use from 225 to 175 on the front to tune to the different bows.  I have all skinny FF strings and all my bows are D@R LB's with real good cast.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: David Mitchell on January 15, 2010, 10:35:00 AM
My longbows (Hill style, non-center cut) are from 48-55# @28 1/2" draw.  I shoot 3555's out of all of them.  Regular inserts, 175 grain heads.  Fly great.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: marshall brown on January 15, 2010, 10:41:00 AM
I shot 5575 with 100 grain insert and 125 grain point out of my 58 lb. Pronghorn. That was with a 28.5" arrow.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: JimB on January 15, 2010, 11:33:00 AM
Not disagreeing with any of the above but if I were going to try that shaft I would at least start with a 100 gr insert and an assortment of heavy heads.Also if the shaft is black,they are listed,I believe,as .340 spine,the trads at .300.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: blueline on January 15, 2010, 01:42:00 PM
I shoot 7595's with 325 up front!!!!
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Greg Skinner on January 15, 2010, 02:44:00 PM
I use the 55-75 GT's for my 57#@27 Hill and they fly great. Cut to 29", 100 gr brass insert, 100 grain steel adaptor, 190 grain BH, about 650 total arrow weight. These same arrows fly well from a 53#@27 Moosejaw Elite that is cut 3/16" from center. The Hill is about 5/16" from center. I tried 35-55 GT's and they were way too light and weak spined.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: LKH on January 15, 2010, 03:45:00 PM
Greg, with all that mass up front I'm surprised you didn't need a broom handle.  What's the FOC on those??????
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Greg Skinner on January 15, 2010, 04:04:00 PM
I think it's right at 30% if I remember correctly.  The more I shoot the EFOC the better I like it. I haven't really had the chance to check penetration on live game, yet, but the overall accuracy and flight with broadheads is superb.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Smallwood on January 15, 2010, 04:16:00 PM
I'd say 55/75 .

My setup/specs-
55#@26"(my draw) black widow longbow

400spine arrow(55/75) cut to 27.5"
100grn brass insert
200grn point =
594grain arrow with 23.6% foc &
39 ftlbs of kinetic energy
11grains of arrow, per pound of bow weight.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: fido dog on January 15, 2010, 04:50:00 PM
Re-measured my draw yesterday. I'm right at 28" The bow is close to being cut to center (JV Outback) and FF string. I would just call James and ask him but he just started tinkering with carbons. The 7595 had quite a WHUMP to it. 200 up front with the 50gr insert. Got a 5575 and cut it to 30" with a regular insert and 125gr field tip. Not bad. I also have some 145gr tips to try out.

What I'm TRYING to achieve is a tough semi-heavy arrow that I can readily build in this "Compound Devoted" town I live in.

Keep em' coming please. I'm starting to see a pattern. =0)

Thanks!

Andrew
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: BigJim on January 15, 2010, 10:41:00 PM
All towns are compound devoted. Chances are you will have to order most everything except maybe shafts.
Also if you are shooting an arrow with fletching on it, you won't learn much.

Bigjim
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: jeanpaul3006 on January 15, 2010, 11:07:00 PM
55/75 out of a 55lbs schafer, needed 300 grains up front to tune. found the 35/55 the proper spine for this bow weight.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Possum2 on January 15, 2010, 11:22:00 PM
I am in the same boat as fido dog I'm shooting a Zipper extreme with standard limbs 57@28 I bought GT 35/55 and cx heritage 250 I've never really did the FOC shot all the time with standard inserts. Just wandering if the 35/55 are going to be to weak since I'm not going to be able to put ant weight up front. I also have a 65" lb 56@28 cut to center at a 27 1/2 draw all arrows are cut to 29" long. Any suggestions?
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: fido dog on January 16, 2010, 02:37:00 AM
OK.....

From what y'all have said. I'm thinking 3555 at 29.5" with a 100gr insert and 145gr broadheads/tips. With nocks and fletching it should be right around 500gr. Around the target weight I was going for (I was going for about 525).

Sound like a flyer??
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: onewhohasfun on January 16, 2010, 05:10:00 AM
Cutting a carbon shaft sjhould be the last thing you do, not the first. Listen to Big Jim.
Title: Re: GT 5575 or 7595 for 57# Longbow??
Post by: Smallwood on January 16, 2010, 02:23:00 PM
Andrew,
I know what ya mean about the Midland/Odessa area being compound oriented, I grew up in Big Spring.
But, there are alot of great sponsers here that you can get your stuff from and have it delivered to your door.
I would order some test shafts from Big Jim in different sizes that you think you will need and then test the bare shafts to see which ones work the best for you.