kinetic energy

[Fish Hawg]

i shoot a mathew lagacy 70# 30" draw w/ 31 5/8" 2317 xx78 eastons that weigh 642gr and they fly at 230fps KE is 75.? ftlbs should i go w/ a lighter arrow and increase the fps or leave it a lone the arrows group great thanks Quick Fisher

[float2ber]

The nice thing about shooting the heavier arrow is that they maintain velocity, thus KE, down range. A 400 grain arrow will lose 8.73% of it's velocity at 31 yards and 16.35% @ 61 yards. Compare that to a 600 grain arrow which loses 5.55% @ 31 yards and only 10.32% at 61 yards. If you plan on shooting game at close range and would prefer one pin out to 30 yards, then go to a lighter setup. But if you want pass-throughs at 60 yards, stay with what you are shooting. You can drive yourself nuts if you futz with this too much. :smile:

[Big Willie]

If it's accurate, leave it alone. A well placed shot is better than speed any day. That is a long arrow though, mine are 29" (Carbon) without an overdraw and with a 125gr tip they weigh around 500gr. Of course, you've got plenty of time to play with it before the season.
Gary

[Fish Hawg]

big willie what is the draw length on your bow and thanks for the info? also thanks float2ber for the info i think i will leave it alone Quick Fisher

[redfish89]

I would stop by archery world in Vancouver and talk to Joe. He is the owner of the store with alot of knowledge on velocity, arrow weight, etc...good question....
good luck

[Fish Hawg]

he set me up w/that combo after we paper tuned it and said that combo has plenty of energy for big game and that it shoots good and would not change it but i wanted a 450-500gr arrow it will pass through on a good shoot ill try it this season Quick Fisher

[Mr. Carp]

Come shoot with me sometime. I have a homemade longbow that was made out of rhoderdendron. Smells good and shoots fast!

[redfish89]

Quick fisher, a 400-500 grain arrow is worth a try. If you are having success with it please post your results.
thanks...