elknut1...that is a great visual of carbon vs alum for penetration. Anybody who hasn' t seen this should, goto www.sccoutdoors.com , then enter the forums, enter Archery and click on the thread " check this out" . Click on the underlined Carbon vs Alum and it will load the feed for you.

I may just help lay to rest some of the misconceptions or doubts[] in what shaft to load this fall.

Thanks elknut1