I buy bullets from Midway and Graf's. Both are good sources!! For bullets of 180 grains oe heavier, both IMR 4831 and H 4831 are good choices. Iuse H4831 wuth 200 grain Nosler Partiton bullets in the '06, and load to around 2680 FPS. I know most African countries require at least a .375 for the big stuff like Cape Buffalo and Elephant, but seem to recall that Jack O'Connor's wife killed her Elephant with an '06 loaded with Hornady 220 grain solids.

Keep yore powder dry!!