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View Full Version : Allegiance FPS vs. Poundage



EricO
March 17th, 2005, 04:39 PM
At the bottom of Page 20 in the 2005 bowtech manual there is reference that says "Subtract 3 FPS for every 10lb Drop in Draw weight". Can anyone substantiate this for me? Is this equation linear when the arrow weights change? (Would a heavier arrow lose more speed on the 50 than on the 70?) I just can't beleive there would only be 6fps difference between a 50 & a 70 pound model of the same bow. It would seem silly to get the 70lb one (like I did) for only a 6 fps reward. I would like any real world feedback that you could provide.

Thanks!

LXtuner
March 17th, 2005, 04:45 PM
I think that's for the 5 grain per pound rule. A 60# bow shooting a 300 grain arrow would only be 3 fps slower than a 70# bow shooting a 350 grain arrow.

EricO
March 17th, 2005, 04:56 PM
I think that's for the 5 grain per pound rule. A 60# bow shooting a 300 grain arrow would only be 3 fps slower than a 70# bow shooting a 350 grain arrow.

Thanks for the reply. That makes a whole lot more sense. They don't qualify it that way in the manual though.