K.E. VS Momentum

[Greg Krause]

I could easily get a heavy and light arrow to tune for my bow and do a test. Not right now of course but after hunting is done.
Mich- As I said ray went clean through the center of the scap with a spitfire and 370 grain arrow. Now if you hit the rotator cuff.........you better have a 30-06. I believe this is where many myths start. Hunter "A" shoots a deer with a heavy arrow, in the scap....blows right through it. Hunter "B" hits a deer the same way, but actually hits the rotator cuff, the arrow penetrates a 3" and the deer runs off. Both hunters "think" the hits were the same and the only explanation to the loss is the light arrow. I know even a heavy arrow will not go through that joint unless you have CRAZY KE. so it had everything to do with shot placement and little to do with arrow weight.

[BT]

michihunter said:

All will have to be equal except weight of the arrows. Seems a bit difficult to do.

Not at all

I have two arrows that are stuffed with AFC shafts which allow the arrows to maintain the same spine while increasing weight 160 grains.

I believe that a blunt would tell more though as there is no assist from the head and all credit goes to the theory of arrow weight/speed itself.

[Greg Krause]

I also want to say that all my experiences with weight vs momentum have been with 68+ pounds of KE and we are talking on deer. If I was really light on the KE I may find different results.
I was shooting and arrow I would call "heavy" but most Traditional shooters would say is way to light, when i shot my buck with the recurve. Many guys say 600+ grains is where it is at. Mine weighed in at 480grains out of a 53# Recurve. The shot was 17yds, it broke the spine in half. The second shot was also at 17yds, I shot through the scapula and into the sturnum. this was the 5.5-6.5 year old that weighed 250#'s. Plenty of penetration on a big deer.

[BT]

skipmaster1 said:

I could easily get a heavy and light arrow to tune for my bow and do a test.

Keep in mind that the outside dia. of the arrow and length must remain the same

[Greg Krause]

I was gonna use weight tubes if needed.

[BT]

Finish on the arrow will be the same if double dipped which will also reduce drag.

Weight tubes would be good but would only give 84 grains additional.

I would like to be closer to 200 to see the real effects.

I also have the bolt that was used in the summer shootout which weighed in @ 800 grains and the same shaft @ 420 grains

The crossbow would also allow less variable as to the shooter

Maybe thats the way to go

[Greg Krause]

let me know when you want to do this. I'll help you out. nothing like seeing the results first hand

[smj]

By gum, this thread is taking shape! If I get a little time over the holidays, I'll break out the physics book and add my 2 cents from the math side of it.

[BT]

There have been more government financed studies done by institutes of higher learning to find this answer and I have read alot of those studies.
Each comes to the conclusion that their contentions are correct.

Problem is that there are two sides of the argument and both sides have tons of evidence to support their contentions.

But the fact remains that someone has to be wrong , right?.

My own contention is that both camps are correct which has sparked much angst toward my camp.
(Which pretty much consists of a lean to due to the lack of government funding to give credence toward my contentions

None the less .... we endeavor to fulfill a need

Skipmaster.... lets get together on this one and make it part of the Judgment call2 DVD

It's a Topic that needs addressing and as you imply .... seeing is believing

[Greg Krause]

The thing with the crossbow....... you will get slightly more KE from a heavier arrow at the same weight....
Can we turn the #'s down a crank. If not we will have to add some brass nocks to slow it down a bit more with the heavy arrow. we want the exact same KE for both tests so we are in fact testing apples to apples.