FYI, here are a couple field photos I have with the stats for the animal.
My gemsbok represented the second worst shooting in my life.  8 shots.  sheesh.  I have the full story and I'll post it sometime when I get a moment.  Worst shooting of my life was my first deer.  That was a royal debacle.  
Even though I took 8 shots to down the gemsbok, my overall average shots per animal on this trip was 2.11 over a 9 animal spread.  (if I had only taken 2 shots to down him my average would have been 1.44!!)