Yes but the edge that they have is critical for pushing the heavier grained high BC 6.5 bullets in the 2900s
I agree. Unless I am reading him wrong, "Baba Louie" was implying that 6.5x284 was too much but 6.5-06 was OK. I was just pointing out they are essentially the same thing.
To the OP, very few people have any business shooting at a game animal at 600 yards. There is way too much to get wrong.