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What speed?

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Old 02-17-2007, 01:48 PM
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Default What speed?

For those who actually know. What speed are you shooting? At 67lbs I was shooting 279fps. At 60lbs its 256fps.
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Old 02-17-2007, 02:17 PM
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Default RE: What speed?

67lb, 28" draw 370ish grain arrows, 305fps ibo..speed is about 260fps.

going to get my draw legnth checked this year...as well as a new string and 70lb draw..hoping to gain a litttle speed. but only because im going to heavier arrows...i want to maximize KE..not speed. but dont wanna loose huge amounts of speed or ill never see the KE...trying to find the balance and optimize my set up for hunting..
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Old 02-17-2007, 02:26 PM
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Default RE: What speed?

Yeah. I am wondering why I am not getting better speed. Its a new bow, so i am going to have to play around with it.

2007 BowTech TomKat
27'' draw with a loop
shooting 357 total grains (easton lightspeeds) (before i put the blazers on. I don't know how much the blazers changed it)
Easton Light Speed 400's are faster than the GoldTip Hunter XTs
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Old 02-17-2007, 02:28 PM
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Default RE: What speed?

01 reflex tundra: 64#s, 28 inch draw, 370 grain arrow. 252 FPS
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Old 02-17-2007, 02:32 PM
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Default RE: What speed?

ORIGINAL: StrutnBPS

Yeah. I am wondering why I am not getting better speed. Its a new bow, so i am going to have to play around with it.

2007 BowTech TomKat
27'' draw with a loop
shooting 357 total grains (easton lightspeeds) (before i put the blazers on. I don't know how much the blazers changed it)
Easton Light Speed 400's are faster than the GoldTip Hunter XTs
Your 27 inch draw is probably taking about 30 fps away from the IBO speed. I don't know what you're worried about. 279 fps is not slow and its' plenty fast enough to kill anything in north america.
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Old 02-17-2007, 02:33 PM
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Default RE: What speed?

strutnbps...your loosing speed because of the 27" draw, peep and nock(if you use them) loop etc...anything on the string will take down speed. as well as draw weight..they test bows with a 29 or 30 inch draw(i cant remember) 300 or 350gr arrow(cant remember) and set at 70lb draw. that maximizes speed and gives you really high IBO speeds compared to a bow set up for hunting with stuff on the string, diffrent draws etc...
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Old 02-17-2007, 02:36 PM
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Default RE: What speed?

Yeah, that is true. I don't shoot a peep or a kisser. I shoot an Eradicator sight. I was just wondering b/c my IBO is 315.
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Old 02-17-2007, 02:36 PM
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Default RE: What speed?

ORIGINAL: mauser06

strutnbps...your loosing speed because of the 27" draw, peep and nock(if you use them) loop etc...anything on the string will take down speed. as well as draw weight..they test bows with a 29 or 30 inch draw(i cant remember) 300 or 350gr arrow(cant remember) and set at 70lb draw. that maximizes speed and gives you really high IBO speeds compared to a bow set up for hunting with stuff on the string, diffrent draws etc...
IBO speeds are checked at 30 in draw and the arrow must weigh 5 grains per pound of draw weight. So IBO rated arrow for a 70# draw weight would be 350 grains.
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Old 02-17-2007, 03:35 PM
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Default RE: What speed?

I ran your numbers with my program and it says you should be getting 280 fps @ 67#'s.

You are dead on and there is really nothing wrong here.
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Old 02-17-2007, 03:41 PM
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Default RE: What speed?

175#, 20" arrow @ 432 grain, 320 FPS, 98 KE.

Here is a good link to anyone that wants to calculate there KE.

http://www.bowsite.com/bowsite/features/practical_bowhunter/penetration/index.cfm


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