I don't think BDC is made for long distance shooting. Quick acquisition is all its good for. which in most hunting situations is what you need. but you have to take it out and see how things work in real world.
I have 3 Nikon BDC scopes. I took my TC Venture 270 out today to get ready for the deer and elk season coming up with barnes 130 TTSX. according to spot my hash marks (circles) are 241, 352, 451 and 587 yards. 8" round target fit into the circle really nice. I was at 365 yards. I figured thats close enough to use the 2 hash mark. I sent 2 rounds off. I couldn't see where it hit at 9x. So I went to look at it and I think thats acceptable shooting for someone who doesn't shoot long distance. But according to Spot on I was to be shooting little low and turned out to be little high instead. I don't think Id go past the 450 mark.

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All of them do something better than the 30-06, but none of them do everything as well.