Unreal. One would think you would be excited about this new innovation with your many years of bowhunting, not degrading the product. How do you figure I am not providing facts. In your first post your implying weight has no factor in an arrow going through a deer, your saying speed is the factor...come on really? That right there tells me how much you actually know about the science behind bowhunting. Your wrong and it is unreal that you don't know this but, it's momentum that is the main factor, theres no argument to that whatsoever. In your opinion you are saying the slide hammer doesn't do anything for penetration, force, kinetic energy, momentum, arrow stabalization, or secondary impact? All of these have already been proven and that is why it is patented. Who is going to waste time and money on a patent for something that doesn't work. I will even give you the force formula....force = mass x acceleration, the kinetic energy formula 1/2MV^2. Most importantly the definition of momentum which is the most important part of penetration - A measure of the motion of a body equal to the product of its mass and velocity. Also called linear momentum. The slide hammer has mass, and it moves within the arrow therefore it has acceleration/velocity, do you agree the slide hammer has weight(mass) and moves in the arrow(acceleration/velocity)? This means it has kinetic energy, it has force, and it has momentum. It is in the arrow therefore it also effects the arrows kintetic energy, force, and momentum upon impact. So are you going to tell me now that the slide hammer has no mass or acceleration/velocity? Because by saying you want proof and you don't believe that it effects force, kinetic energy, and momentum you are basically saying the product has no mass or acceleration/velocity. Plain and simple the slide hammer will add more kinetic energy, force, and momentum to your setup. What else can this do well a light arrow does not have as much kinetic energy, force, and momentum as a heavy arrow. You can still go with that light arrow and use the slide hammer to increase your kinetic energy, force, and momentum, or simply just increase the kinetic energy, force, and momentum in your heavy arrow/current setup. Your speed will still be very good, however, keep in mind its momentum that should be your concern not speed. Were not shooting deer at 60 yards away. I have seen bows still shoot over 300 fps with this product. I can not stress enough not only is the slide hammer providing this it is also providing stability and secondary impact.

Your still going to tell me this has no effect? "Just do the math" As far as arrow flight stabilization well...that can be measured/seen and has been. It is a weight in the back of the arrow which helps stability, it moves forward upon impact. Secondary impact well it speaks for itself...I am done arguing because no matter what I say your to stubborn to realize the obvious facts and mathmatical calculations. Your proof that you seek is sitting here right in front of you. Do you have to buy this product, no you don't. Your entitled to that and I respect that you are part of bowhunting, something I love. I also respect you for all the years you have put into bowhunting. Thank you for being part of a great tradition. To sit here and say theres no proof and it wont do this or that well that is just you being stubborn because its obvious that the way this product reacts in an arrow will do all of these things. From all of your years experience I think you already know this, but I think you are hot headed and stubborn as well, so you will never admit you were wrong. Its like saying a bow doesn't shoot arrows, or a gun doesn't shoot bullets. I don't know how else to make this more clear to you.

Edit: An interesting take on speed vs momentum by T-Bone http://www.realtree.com/hunting/arti...ed-vs-momentum