tex, for those figures, that is right where it all fell together like you said...just a nice balance of it all before you start eating speen and not gaining hardly any KE...

Jeff, its hard to explain....but what would hit harder?....a mack truck fully loaded doing 50mph or a mazda miata doing 90 mph? (bad comparison size is a huge difference but use your imagination....i know you got one ) think about it though...the lighter miata is traveling faster, but will be easier to stop because of its lightness...a sturdy brick wall might stop it...while the same wall will be laughed at by the mack truck....like i said...hard to explain...with deer, the difference probably isnt going to mean a whole lot....i dont know...i dont have the time and years of expirience and actual testing other than figures and my imagination and some reading and research....could get me an extra inch of 2 of penetration on a BAD hit when i need it...who knows...i could probably show it better with bullets....you can really see the loss of energy at longer distances with lighter bullets opposed to heavier bullets...im going to do ALOT of research and toying around before i buy a new bow/arrows....i will likely go with a speed bow...and throw some true LOGS on as arrows...aughta knock em off their feet! lol...DEAD is DEAD....we know that. my line of thinking is in times of bad hit...contacting a bigger bone than ribs...you and i both know STUFF happens...shots go astray...extra penetration and power can never be a BAD thing...

bob, point me in the direction of the Dr. Ashby studies if you can...i thought i had them somewhere but cant find them and never did get around to reading them fully....

But your comparison should be more in line with say a camry and a regal......or a mack truck and a Peterbilt. When the numbers get skewed too badly in one direction the information derived is useless....and the "test" flawed.

We're talking about deer, here....and pointy tipped arrows.

PM'd.

i know Jeff, i know....we can debate stuff like this till we all turn blue in the face and blood coming from our ears....in the end, we all know a 200lb deer isnt exzactly tough to bring down...different strokes for different folks....im also searching for a broadhead that is practically bullet proof...my muzzys will do for this season...after that im switching....do i need a head that is practically bullet proof? no...do i need to shoot a heavy arrow(not that mine are exactly heavy) no...but its my prefrence...i wanna find a nice balancing point between weight, speed, energy, cutting diameter etc...while still having a very tough arrow and broadhead...oh ya....2 dream animals to hunt are grizzly/brown bear and cape buffalo with a bow....dont ask why...i cant give much of a reason and dont have a death wish...just a country boy with a dream lol...

heres the Ashby studies...

http://tradgang.com/ashby/

maybe Bob has other ones he can post...its raining...i dont have class today...got minimal work to be doing...im gunna do some reading...

Anything under 450 grains is unethical and illegal in most states. If you hunt with arrows any lighter than that - you're just an ignorant jerk. Flat-out.

First good post from you in a long time

How heavy arrow are you shooting? From what I understand, two toothpicks have more spine than your arrows[8D]

My arrows weigh between 55 and 85 pounds. It says so on the shaft.

That my friend is FUNNY!!

Jeff, if you got the time sometime, youd probably like reading the studies...

i read Momentum, KE, Energy and arrow penetration...not word for word, but a thourough skim and read most of it...puts it all into an understandable reading...

is it needed to setup a bow and arrow in ways that Dr. Ashby describes to hunt deer? i doubt it...but, one day, it might pay off...

found it VERY interesting that Dr. Ashby says....."Outcome studies show that lack of penetration is the number one cause of a hit being non-lethal" taken from the article...

I'm so glad I don't get caught up with this bs---get a nice arrow, put a nice broadhead on it, shoot it accurately...kill the animal.