I agree silent,there will be a point that there will be so much turbulence that stabilization would be next to impossible.


Elk,you are on the money with foc,I agree but if the heavy,slow arrow has the same foc as a lighter one it will still need more Fletching.Slow arrow will become unstable in flight unless their is sufficient stabilization on the back.The speed will actually help stabilize a light arrow to a point.


I do not agree with you that speed needs to be increased to increase ke,you increase momentum AND ke when shooting a heavier arrow out of a bow.The speed decreases but ke increases.


Arthur,you are catching on to what my question is.Yes there are many other variables beyond foc,momentum and ke.Drag coefficients is one.Diameter is another.How about spine,that is another huge variable.Imo their is no 1 thing that does everything,they all are needed and should be taken into account when setting up equipment.


All of these variables is why I have always said to get a well balanced arrow and stay within the parameters that Easton gives you on their hunting charts for arrows.


Aluminum needs some thicker walls to be effective,imo so naturally they will be on the heavy side and carbon doesn't need to be as heavy,IMO to do the same job .As to how much,that is debatable,heaven knows we have debated it.
But maintaining a good foc and a proper spine will always be at the top of my list.