don't lose sleep over the energy
Why do you not consider this? (honest question, not flippant)
I think he is saying that there is still 1000 ft lbs + of energy at 500 yards, so it shouldn't be an issue.

I wouldn't be concerned with that sort of energy at that distance. Which makes your 350 yard reference extremely reasonable for energy. With that said if both bullets shot equally at 100 and 200 yards for accuracy, I would still take the higher BC for confidence that the wind is that much less of a factor, and can you have too much energy at 350 yards with the loads we are talking about? I think not..... again my two cents on the subject. I haven't taken a long shot since I have done all the research. 40 yards with 168 grain berger in the neck of a whitetail, doesn't really matter what bullet you are shooting at that distance as long as you hit the neck.