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Arrow Speed and Kinetic Energy

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Unread 05-11-2012, 09:15 PM
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Join Date: Nov 2011
Location: Prineville Oregon
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Re: Arrow Speed and Kinetic Energy

Originally Posted by Timber338 View Post
If we are talking only about what happens when the arrow strikes an animal, then momentum is king. Arrows kill by penetrating a broadhead. no penetration, no kill. period. Kinetic Energy is much more at home with today's well constructed rifle bullets. It was in days past, with inferior cup/core lead bullets, where large bores and heavy bullets (high momentum) killed more animals. High KE bullets produces larger shock waves to be transmitted through the chest cavity, a very different internal phenomenon than an arrow/broadhead.

Also think about the construction of the Arrow. carbon fiber is fantastic at absorbing energy. Think carbon fiber bicycles, they are both light and dampen the shock from the road. The internal damping (energy absorption) of carbon fiber is higher than just about any material. Although carbon fiber arrows are hard to break, are they really what you want at the moment the arrows strikes the animal you've been stalking for a week? I know lots of archery hunters who are switching back to hunting with aluminum arrows because they have had bad experiences with light/fast carbon arrows not penetrating.

However, there is more to it than just penetration. Flat trajectory from higher velocity has a lot of merit. And as mentioned in a previous post, the correctly matched spine for your bow is going to be the best all around combination. As with everything the best place to be is a good happy medium with all factors.
Your right! Penetration in the wrong place, usually means hours or tracking
and finally a drop of blood the size of a pin head. Great visibility for a half
mile in all directions and no animal.

I perfer a double lung hit, with a recoverable arrow and a blood trail That will
end in about 40 yards.

I haven't had much experience with not penetrating, usually when I'm hunting with the young guys who shoot 80 to 90 Bows, we usually have to go out
about 75 to 80 yards to find their shoot throughs.

Nothing is better than the correct equipment fitted to the bowman
and hours of Practice,Practice,
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