If you can shoot well enough and know your drops and wind compensation enough to shoot 200 yds....

I shoot the 200gr SW. By looks the Parker and Barnes TMZ already mentioned would be good options. Don't forget the Precision Rifle Dead Center bullets either, they are excellent long range bullets. Cabelas sells them too.

I used to shoot the DC's, THe Parker and TMZ are newer and since I tend to stick with what is working for me I have not tried them and stuck with the 200gr SW.

There are different philosophies on bullet weight at long range. Some say go heavy to retain energy. Others say go lighter and flatten the trajectory. In centerfires I go with the "heaviest bullet your twist will shoot" philosophy, but for my ML I have just had really good luck with 200gr bullets (SW and 195gr Dead Center). The drops with heavier bullets just get too extreme at longer ranges and they don't help your wind drift much. But honestly I don't think there is a right answer to that one, if I were forced to pick another bullet right now I'd probably go to a heavier TMZ.