Hunting Washington Forum
Equipment & Gear => Archery Gear => Topic started by: gutsnthegrass on August 17, 2015, 08:16:40 AM
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I was finally able to get out and shoot my new bow. IBO is rated at 360fps, I know this is at 70lbs, 30" draw and 350gr arrows. My setup is 70lb, 29" draw and 420gr arrows. I shot my bow through the crono and was getting 310fps. I think I have seen a calculation out there to figure out what my specs would reference to if I was at IBO specs. I was able to figure out that I am getting 89lbs of KE wich I am very happy with and my FOC is only at 10%. I read that 10% is on the low side, should I be concerned with this at all.
Thanks
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Sounds about right to me. My calculation puts you about 6fps short, with peep and dloop. Most RPM's didnt hit thier IBO anyways, they are more of a 350 IBO bow. You're still getting a ton of speed out of it though. With that draw length and speed with those arrows you have way more than enough to easily take anything in North America.
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sounds about right what rest ?
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Rest is a Ripcord, might switch to a QAD though.
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Rest is a Ripcord, might switch to a QAD though.
:tup: i get 310 out of my overdive at 420/30draw 70lbs
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Depends on the amount of weight on your string. Using an online calculator and guessing 20gr on the string, it says 320fps for your setup.