I wouldnt do it because of a lack of experience, and from the sounds of it your starting in on the LR scene too.
Me neither. I have been hunting and shooting for 42 years now. My longest kill or even shot at a game animal has been less than 400 yards (as best I can recall). Never had to shoot farther nor do I plan on taking one longer on a game animal. I guess I have enough experience not to. Hell my 7mm drifts over 6 feet in just a 10 mph crosswind at 1000 yards. My 300 is about the same. 308 or 270? Worse.
Paper on the range is a different story. We have a very fine range out to 1000 yards. All of the long range shooters and top F Class and open competitors use the ballistics programs very effectively to dial in their shots and dope the wind. That is were I learned it.
I still have some unanswered questions on this thread;
What do you use to range out to these vast distances?
How do you determine your holdover or clicks without ballistics tables?