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Chuck from KY.
Joined: 02 Jan 2006
Posts: 11
Location: Canada, KY.
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| Posted: Mon Aug 20, 2007 11:17 am Post subject: F.P.S. Numbers |
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| Need some info. Why the difference in AMO f.p.s. numbers and IBO f.p.s. numbers? Chuck <>< |
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redrider
Joined: 20 Mar 2006
Posts: 2469
Location: NE Kansas
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| Posted: Mon Aug 20, 2007 8:47 pm Post subject: |
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That's a good question I don't know the answer to, but I did find this:
http://info.htcomp.net/ragsdal.....enDocument |
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cam69conv
Joined: 22 Oct 2006
Posts: 651
Location: Summit, IL
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| Posted: Fri Aug 31, 2007 12:43 am Post subject: |
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| To put it simply is this... AMO is found by using a fully set up arrow like you would actually shoot, i.e. it has fletchings and tip and is properly spined. I.B.O. is found using an arrow that is 5 grains per inch, no tip and no fletchings at 30 inch draw and the bow maxed out poundage. In other words if you shot it like that more than a few times you would have a blown up bow. When I bow shop I generally subtract 10 to 15% from advertised bow speed and it will be fairly close to what I set up at. I generally shoot with a 9 grain per inch arrow and 100 grain BH's (for deer) 125 for elk and My draw length is 29.5. Hope this answers your question and good luck. |
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