mossberghunter93

Is there a way to tell how my fps of my arrows i thought i saw on here of a way that had to todo with the poundage and weitght of arrows and broadheads
so
poundage- 50 lbs
broadhead weight- 100 grn
arrow wieght- not real sure they are carbon gold tip hunter XT 5575 and on the side of the arrow it says- wieght tol +/- 2 grains
if somebody could help figure it out id appreciate it
thanks guys

kickin_buck

Take your bow to a shop and shoot it thru a chrono. If you provide your bow's IBO speed and few other bits of information, I could get a pretty close guess for you (+/- 5fps), but it would be just that, a guess.

RIStrutStopper

Chrono is the only way to go. So many variables are involved you'll never accurately calculate it.

ozbowhunter15

This will give you a rough estimate.

http://utopiaprogramming.com/ke/KineticEnergy.html

mossberghunter93

what is IBO speed?

ozbowhunter15

The speed your bow shoots a 350 grain arrow at when it's set at 70 pounds with a 30 inch draw length,It should be on a sticker on the bottom limb i think. Or you could look it up on the net.

Rob/PA Bowyer

You'll need to post your arrow length as well.

mossberghunter93

29 in arrow s

SteveBNy

Those arrows are way overspined at 29" with a 100 gr point in a 50 lb bow.
You will never get good flight and with broadheads will be even worse.
You will either need to go a LOT heavier points (200 gr or more) or drop to 35/55 arrows, leave them longer and still shoot at least 125gr points.

mossberghunter93

^^^wow i guess i dint know that the pro shop guy thought it waas ok cause he tuned it all up the bow seems to shoot ok