I' ve always had good success with the 130gr Nosler BT.

I would just like to remind anyone that plans on shooting at 300yds to go to a range a practice alot. Practice shooting at 300yds not 100. Regardless of what load you shoot, relying on published bullet trajectories not a good idea. Shooting deer at long range is not as simple as some believe. A 1" group at 100yds does not automatically translate into a 3" group at 300yds.