ORIGINAL: alwyshntn
My bow shoots at 304fps easily and still I have 71ft. lbs. of kenetic energy. Just because a bow is fast and the arrow isn't a piece of oak timber flying thru the air that it doesn't possess the capability to put out the energy. 71ft. lbs. I would think is more than enough to take down a elk at 50yds. I'm sure it has been done with less. How fast does your bow have to shoot before you are a SPEED FREAK/IDIOT?
You are most likely right. However, you don't have 71 ft-lbs of energy at 50 yards.
Here are the problems with your setup.
1. You do have alot of KE at the bow, however a .22 has up to 165Ft-lb of energy. Would you shot an Elk at 50 yards with a .22? It is not Energy that gives you penetration it is momentum
2. A light arrow loses energy much faster than a heavy one. Odds are a heavier arrow for you set up would have more energy at 50 yards than your set up.
3. It just doesn't make sense to shot that fast of an arrow at Elk. The kill is big on an Elk so why do you need that good of a flight path. If I miss judge the Elk (I think a range finder should be used at 50 yards anyway) for 45 and it is actually 50, its no big deal.
I'm sort of old school but I don't think I would go that fast and light. If you missplace the shot you have almost no chance of getting good enough penetration to kill that animal. With my pieces of oak timber, I have a much better chance than you do.