Never done a whole leg, but did find a couple posts on other forums. Some disagreement as to final temp. Some say 150ish others go to pulling temp.
http://www.smokingmeatforums.c...-of-venison-whole/20
http://www.smokingmeatforums.c...70754/whole-deer-leg
http://www.baitshopboyz.com/fo..._posts.asp?TID=10155
http://www.smokingmeatforums.c...9748/smoked-deer-leg