I have to agree with most here...Alot depends on the energy of your set up, alot of KE is lost after 30 yds or so, think you might have to be shooting 70+ # for a shot at 60 yds. Keep in mind that the reaction time of a whitetail can be as fast as 600FPS for its initial reaction. My bow isnt shooting quite that fast!
Take a shot which you are sure will provide a kill and recovery, if you let this one go, another will cross your path sooner or later.