Thanks, thanks, thanks.
However, this section doesn't explicitly address the tractability issue, although it clearly implies it with the analysis to the pitching moment.
Your suggestion regarding the supporting references is a good one and I'll go there next.
By the way, for anyone who has followed this thread this far, you may be interested in
which shows the fast and slow oscillations of the bullet tip as it trys to stabilize.
[ 12-23-2002: Message edited by: Blaine Fields ]