+1 to practice shooting off of sticks. I built a set and then printed pictures of Kudu, Impala, etc. I would set the pictures across my basement and then load three blanks and practice taking three quick shots. Got me used to holding on the sticks and cycling through the shots. Took about 12 shots a night for a month or two and was noticibly better by the time I left for Africa. That was the most beneficial thing I did before my trip. Ultimately, the entire effort comes down to shot placement. You may not have much time for some of the shots, so be ready!