<BLOCKQUOTE id=quote<font size=1 face='Verdana, Arial, Helvetica' id=quote>quote:<hr height=1 noshade id=quote>
...
If you are shooting into the same target medium, whether an animal or target, the smaller, faster arrow will always out penetrate the heavier slower arrow provided they have the same KE. ...
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face='Verdana, Arial, Helvetica' size=2 id=quote>

bigbulls-
I am with you to this point. Take the extreme - shoot a laser beam with 75 foot pounds of KE. No penetration because the momentum is too low - of course, you can use one pin out to the moon which makes up for it somewhat. <img src=icon_smile_wink.gif border=0 align=middle>

beprepn