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Discussion Starter · #1 ·
I see people on here that know EXACTLY how much their arrow weighs. How do they figure that weight?

I shoot GT 5575's, 75 gr. heads, Acunocks, and FOBs

I think??? my insert to nock-end cut dimension is 28-1/2" I will verify that tonight.
 

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I see people on here that know EXACTLY how much their arrow weighs. How do they figure that weight?

I shoot GT 5575's, 75 gr. heads, Acunocks, and FOBs

I think??? my insert to nock-end cut dimension is 28-1/2" I will verify that tonight.
They weigh them!

your arrows should weigh in the neighbor hood of 370 grains depending on what model 5575 you have.

GT list a couple of different 5575s that weigh 8.6 gpi

so....

8.6x28.5=245.1
+75 for the tip
+20 for the FOB
+15 for the acuknock (took a shot in the dark at that ones weight)
+15 for the insert

=370 roughly
 

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Discussion Starter · #4 ·
They weigh them!

your arrows should weigh in the neighbor hood of 370 grains depending on what model 5575 you have.
not the expensive ones... They have the beige lable on them. Expedition Hunter @ 8.2 gr/in. How much does my insert weigh?
 

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not the expensive ones... They have the beige lable on them. Expedition Hunter @ 8.2 gr/in. How much does my insert weigh?
Well using the numbers I used, that arrow would weigh in the area of 360 grains.

I figured about 15 grains for the insert. Common weight for inserts but I've seen inserts that weigh near 30 grains.

So take my numbers as a general area of what they weigh. I would guess I'm within 10-15 grains however.
 

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I'm gonna guess you weigh in about 375 grains. I have gt5575's @ 28 w/ feathers and a wrap and I'm at 371 I believe.
 

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Discussion Starter · #7 ·
so is ~370 gr. adequate for hunting? I just dropped down from 100 gr. tips to 75 gr.
I have a 60 pound firecat.
 

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so is ~370 gr. adequate for hunting? I just dropped down from 100 gr. tips to 75 gr.
I have a 60 pound firecat.
I like heavier arrows. I would put the 100's back on myself. I shoot 125's which really get the weight forward. The little speed gain from dropping to 100's in my setup actually reduces my overall KE.

To answer your question you need a KE calculator.
http://home.att.net/~sajackson/ke.html
 

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so is ~370 gr. adequate for hunting? I just dropped down from 100 gr. tips to 75 gr.
I have a 60 pound firecat.
they would work as long as you are using a good cut on contact head. i just weighed a GT hunter...28.25 in length with 100 gr tips and blazers and it was 378.1 grns. i prefer using 100 gr tips.
 

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370 is plenty with any kind of head IMO. 300 grs will blow thru a deer on a double lung shot so fast it won't know it is hit if you are shooting good speed.
 

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