JJ,
I guess every type of hunting and different areas have different norms for shooting, but what distance do you suggest becoming proficient offhand for say, Kudu, Gemsbok, Nyala, Impala, Waterbuck? Obviously, we all want to take at least some kind of rest if time and situations allow, but what distance do you as a PH expect proficiency off hand? 100 yards? 200 yards? more?
For the most part, after I get past load development and am comfortable with accuracy, trajectory and bullet weight of a given load, that's it from the bench for me. I normally only practice off hand "snap" shooting out about 50 yards with skeet as my target. I practice off hand to around 150 yards with paper plates. Longer distances I usually shoot from sitting, kneeling, resting on a limb or rock, or prone. As far as the amount of real world practice goes, I probably shoot 50 shots for everyone one shot I shoot from the bench.
90% of my hunting is done with single shot rifles, so that first shot has to be where I want it. Would you change any of the scenerios for practice, given the conditions in your original post?