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Discussion Starter #1
Hey all,

I have never delved too much into the math of my arrows before, so forgive my ignorance.

Not that I am a speed freak, nor want to get caught up into fps-mania.

But I felt my fps was pretty low and I am trying to figure out why.

I shoot a 27 inch DL @ 60# (maybe 61-62)

I just calculated that my arrow weights 395 grains

My question is, is that on the heavy side, or is that right? I chose a goldtip 5575 XT hunter because of their chart and my specs.

This is the math on how I came to the arrow weight

Plain carbon arrow weight - 238.65 grain
Field tip - 100 grain
Insert - 14.6 grain
Nock - 25 grain (Lumenok)
Fletching 18 - grains

Total weight 395

Any help is appreciated ;)


Thanks alot!
 

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Resident Philosopher
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for hunting should be ok..a bit more knockdown
but for speed 5gr per pound
60#=300gr
62#=310gr
 

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Looks like your in the right neighborhood to me for a hunting arrow.

You can try an arrow spine program for free and get a better idea if you want.

You plug in some other details like Bow model and arrow length and get more accurate info, and a better flying arrow. :teeth:
 

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Discussion Starter #4
Thanks for the help.


I guess I don't understand why GT's site says that 60# should be using 5575 if its that heavy.

I also don't really want to have 2 sets of arrows I suppose either.

So its not a bow issue then, just fps of my bow with a heavy hunting arrow.


:pukey:
 

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Resident Philosopher
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Thanks for the help.


I guess I don't understand why GT's site says that 60# should be using 5575 if its that heavy.

I also don't really want to have 2 sets of arrows I suppose either.

So its not a bow issue then, just fps of my bow with a heavy hunting arrow.


:pukey:
5575 is thier designation for a 350 spine
gt5575XT hunter shafts are heavy but heavy is good on a hunting shaft
if you want a target shaft for speed go to the GT UL 22pro they are a 340 spine
 

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grizzly
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No such thing of being to heavy, IMO. Mine are 480grains and with todays smoking bows it works well. My new Carbon Matrix is toss my arrow at 280fps, 29" 70#s.
 

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Unless you are real bad at judging yardage, it sounds perfect.
 

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395 grains is not HEAVY by any reasonable standard. It’s just about right for hunting deer. Go much lighter, and you will start to loose momentum fast.
 

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That's not even in the viscinity of heavy. I wouldn't even consider hunting with an arrow under 400 grains. Mine usually fall between 470 and 500 grains.
 

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Here's heavy

I love heavy arrows. I shoot a Bowtech Guardian 70# @ my 28" draw, and my arrow is a 350 CE Heritage, firenock, 125 grain point, 2" aluminum foooting on 28" arrow, total arrow weight 560 grains and running 240 fps.
In the words of Johnny Dangerously. "It shoots through Schools!"
 

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If your looking for speed, then yea your arrows are heavy. But for hunting their is no such thing in my opinion. Right not I shoot 388 grain arrows but ordered a couple FMJ's that will weigh about 420 grains.
 

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Anti Fanboy
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I agree. 390 to 395 grains is about the least I like to use for a 60# bow. So IMO you are okay as long as everything is in tune.

Bman.
 

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You are at pretty much what others shoot for arrows. I shoot a 7.3 grains per inch arrow. But, I do shoot a 405 grain total weight arrow. If you want the speed, then shoot a 6 or 7 grain per inch arrow. If it is knock down force you want, then go with the heavier arrow. About a 9.3 grain per inch is good.
 
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