Shaft for Experiment

[konrad]

I am working on an archery project and am looking for suggestions on a test shaft for my device.
IBO states: 30 inch draw, 350 grain arrow and 70 pound draw weight.

My machine will have a 25 inch power stroke and I am calculating efficiencies surpassing that of state-of-the-art compound technology today. The use of an over-draw rest will allow for a shaft length of 27 inches.

It is my belief my design will produce the equivalent thrust as that of a 78 pound draw bow.

Remember the 350 grain max weight, no fletching or vanes required and please, no explosions!

[carpsniperg2]

I run 5575 goldtips in my 80lb x force. I shoot it set any where from 76-83lbs maxed with those arrows and have never had any problems. My arrows are 29" with you being a couple inches shorter it will even stiffen them up more. I have also ran the 400 full metal jackets threw it. A couple ideas for ya

[BULLBLASTER]

for experimenting i would definitely stick with something very stiff. like a .250 or.300 spine. maybe a gold tip ultralight, or a easton lightspeed, or a carbon express mach 5. all fairly light and stiff. play with point weight and you should get 350 grains.