[bogie]

What i am wondering is if there is a formula for getting an "estimated" Fps on an arrow before buying them.

If you know your current setup, you know how much your arrow weighs, and you know how fast your bow shoots that arrow. Could you get an estimate of how fast your bow should shoot a lighter or heavier arrow?

I hope i worded that right lol. Id like to get an estimate of how much KE ill get from different weight arrows before purchasing them.

 

[Wonderboy]

I think it's every 3-4 grains = 1fps.

 

[SR4]

Heres a link that will get you real close to actual fps based on draw weight, arrow weight, etc.

http://www.backcountrybowhunting.com/articles/calc/

 

[bogie]

Thats EXACTLY what i was looking for thanks !