Broz ,,,,,,,,
you sound like a man who knows what he is doing ,,,, and YES, 800 yards is a long ways with the hold over method, and in fact is my last mil-dot, 900 yards would be the top of my duplex post ,,,,, ((I sight in dead on at 200Y, 400Y is my first mil-dot down, 550Y is the second mil-dot))
it is also true that the Lazzeroni Warbird is damned fast compared to most 30cal hunting cartridges, so to 800 yards, it is pretty flat ,,,,, that also helps me out and that is the whole point of why I designed all of the high-speed Lazzeroni calibers in the first place ,,,,,
years ago when I starting "extending the range" of my own shots in the field, 300 yards was considered long and 500 was considered to be to HELL and back ,,,, and the magazine writers back in those days would RUN from any story that included a 500 yard shot at a game animal ,,,,,
now ,,, my gosh, it is like 600-800 yards is almost the norm, with 1,000+ shots now considered very long range ,,,,,,
but as you and I both know, without a lot of practice and good marksmanship skills, no matter how much technology you buy and bolt on your rifle, you will not be successful at those kinds of ranges ,,,,,,,
energy on the animal is another issue at 1,000 yards ,,,,, obviously a 7.62 NATO (.308 Win) is not going to put the hurt on anything at 1,000 yards ,,, so I think the 300 Ultra, 30-378 Wby and Lazz 7.82 Warbird are almost minimum calibers speed wise for taking game animals at those kinds of ranges ,,,,,