most longbows arent quite center shot like recurves. arrow spine becomes more of a concern.

QuoteOriginally posted by wojo124:
most longbows arent quite center shot like recurves. arrow spine becomes more of a concern.

yes, it absolutely sure could.  emphasis on 'could'.  

the need to control spine depends on more factors than just arrow stiffness, so i've discovered to my chagrin after decades of chasing the arrow spine.  

shaft material, arrow balance and how you shoot are added important factors and why i can get excellent flight from my way way less stiff carbons with well over 400 grains up front.

EFOC is what I call 'peripheral'.  Its not and should not be the main focus or goal.

Some folks have forgotten how lethal the bow and arrow are without all the 'peripheral' static that goes around.

A well tuned bow and arrow at 9-10 grains per pound and a sharp broadhead are lethal on any North American Game no matter if the FOC is 12 or 35%.  

Arrow flight, sharpness and ACCURACY trump all the peripheral stuff, and too many as of late are losing sight of that.  And animals haven't become armor plated over night, or immuned to set ups that have worked for bowhunters for centuries.

Accuracy....sharp head...and arrow flight-arrow flight-ARROW FLIGHT!!!

precisely what terry sez.

get the flight right, be consistently accurate at hunting distances ... then maybe tinker.  :D

No No NO Rob!!!  HUNT...then maybe tinker    :D

I'm calling Ray!!!...Also can go back to last years spot no problem.

QuoteOriginally posted by Terry Green:
No No NO Rob!!!  HUNT...then maybe tinker     :D  

I'm calling Ray!!!...Also can go back to last years spot no problem.

mmmm, yeah ... HUNT!!!!    

I could not agree more with Terry. Accuracy and straight shooting arrows should be the goal. If you can work EFOC into your set up I think it is for the best.

Ben,my first impression when I read your post was simply that shooting the same arrows out of a recurve (centershot)  and a longbow (not centershot) will not be compatible. Poor penetration often is the result of arrows shooting poorly. My guess and recommendation is that your longbow would do better with a lighter spined shaft or a longbow 10# heavier. I made custom  arrows for a number of years and this was always the case unless the longbow was cut to or past center like most recurves are.I  hope you like to tinker because I believe that to get the same results with your longbow you are going to have to experiment with different arrows. Good luck and have fun.

What Terry said!!

My own set up with a 55# @29" Dan Toelke Whip: Beman MFX 500 Classics cut 30 1/2" throat of nock to b.o.p.- two 100 grain brass inserts, 145 gr. field pts., 3 five inch parabolics, total weight of 655 grains. When paper tuning at 5 yards they produces a clean, even 5/8" hole every time. Carbons are MUCH,MUCH, more heavily spined than the manufacturers charts indicate.

QuoteOriginally posted by Jim Wright:
My own set up with a 55# @29" Dan Toelke Whip: Beman MFX 500 Classics cut 30 1/2" throat of nock to b.o.p.- two 100 grain brass inserts, 145 gr. field pts., 3 five inch parabolics, total weight of 655 grains. When paper tuning at 5 yards they produces a clean, even 5/8" hole every time. Carbons are MUCH,MUCH, more heavily spined than the manufacturers charts indicate.