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Author Topic: IBO speed?  (Read 8854 times)

Offline BOW HUNTER

  • 7 Point
  • Join Date: Jul 2008
  • Posts: 597
  • Location: Racine,WI
IBO speed?
« on: July 12, 2008, 04:06:16 PM »
 What does it mean? I have a Bear "Truth" bow with an advertised IBO speed of 300 something. It's rated for 70 lbs and I somehow have it cranked to 74lbs. I shoot a 30 inch carbon but am getting around 260 FPS. Not that I need any extra speed I shoot accurately with this setup, just wondering how they get there numbers.
N. Hoffmann, Racine,WI

Offline curs1

  • 12 Point
  • Join Date: Jul 2008
  • Posts: 2038
  • Location: Kingsland, Georgia
Re: IBO speed?
« Reply #1 on: July 12, 2008, 05:08:18 PM »
The numbers are based  on a  350 grain arrow at 70 pounds   30 inch draw length

Offline bowhuntersrave

  • Button Buck
  • Join Date: Jun 2008
  • Posts: 26
  • Location: Baldwin , Maine
Re: IBO speed?
« Reply #2 on: July 12, 2008, 05:27:55 PM »
CURS is correct, but also remember not all bows shoot the same
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Offline BOW HUNTER

  • 7 Point
  • Join Date: Jul 2008
  • Posts: 597
  • Location: Racine,WI
Re: IBO speed?
« Reply #3 on: July 12, 2008, 06:33:53 PM »
Thanks guys.
N. Hoffmann, Racine,WI

Offline broadhead20

  • 6 Point
  • Join Date: May 2008
  • Posts: 269
  • Location: Grady, AL
Re: IBO speed?
« Reply #4 on: July 14, 2008, 08:39:37 AM »
It is as close to impossible as anything to get the full speed out of a bow. When they test them, just like they said above, it is with a 350 grain arrow at 70 lbs with a 30 inch draw. The bow is shot by a machine, and there are no accessories on the bow. When you start talking about hunting setups, most people shoot a 29 inch draw, which takes atleast 10-15 fps off the top. Then by the time you have added a peep, silencers, loop or nock to the string you have slowed it down even more. I shoot a PSE X-Force, rated at 348 fps. I have a 29 inch draw, shoot a 375 grain arrow, and with the peep and loop on the string (I currently do not have string silencers) I shoot around 320 fps, which is still smoking. The point is, no matter what the bow is rated, you can bank on losing plus or minus 30 fps with your hunting set up.


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Offline DEERSLAYER

  • 2009 Prize Winner
  • 10 Point
  • Join Date: Jul 2008
  • Posts: 1731
  • Location: Muskegon, MI
Re: IBO speed?
« Reply #5 on: July 21, 2008, 10:55:06 PM »
I wish manufacturers would go back to the AMO rating wich is more realistic. I never liked the change to the IBO way of rating them. It was just a way to sell more bows by making them appear to be a much higher performance bow than their competitor. It worked so eventually all the manufacturers had to replace AMO with IBO to compete.

Offline wildman

  • 6 Point
  • Join Date: May 2008
  • Posts: 309
  • Location: ramer, al
Re: IBO speed?
« Reply #6 on: July 23, 2008, 10:24:07 AM »
what exactly does AMO and IBO stand for?

Offline DEERSLAYER

  • 2009 Prize Winner
  • 10 Point
  • Join Date: Jul 2008
  • Posts: 1731
  • Location: Muskegon, MI
Re: IBO speed?
« Reply #7 on: July 25, 2008, 10:52:21 AM »
If I remember right AMO stands for the Archery Manufacturers Association and IBO is the International Bowhunters Organization.

Offline wildman

  • 6 Point
  • Join Date: May 2008
  • Posts: 309
  • Location: ramer, al
Re: IBO speed?
« Reply #8 on: July 25, 2008, 10:59:51 AM »
thanks, I had no clue

Offline DEERSLAYER

  • 2009 Prize Winner
  • 10 Point
  • Join Date: Jul 2008
  • Posts: 1731
  • Location: Muskegon, MI
Re: IBO speed?
« Reply #9 on: July 27, 2008, 02:17:42 PM »
"I had no clue"

I seem to have that problem more and more as I get older.  ;D :o

 

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