I think there is an iPhone app for this situation.  You input the estimated height and weight of the bear.  The app then tells you which gun and ammo to use.  Would the cost of the app be allowable? ;)

======================================================================
 Instructions on how to use the RESADM-L Mailing List, including
 subscription information and a web-searchable archive, are available
 via our web site at http://www.hrinet.org (click on "Listserv Lists")
======================================================================