Since you've put these self-imposed limits on yourself (range, sighting system & intended target) my natural response would be more of a question; Can you place every round within the vitals of your average size deer at that range?
I guess what I'm saying is that it's not so much what you can do or what the gun can do, it's what can you do in combination with the gun that matters.
I would suggest (regardless of the gun or game being pursued) that you never take a shot you aren't capable of making. You determine that effective ability at the range. If you decide for example that your intended games vital area is 10" in diameter, then the range at which you can hit that 100% of the time is your "effective" range. I guess what I'm suggesting is that regardless of what the gun is capable of doing, the shooter is almost always the limiting factor.
