I will be going Elk hunting this year, I will be taking my model 700, 300 Remington Ultra Mag. As always I will be loading my own ammunition for this hunt. I would just like to get some feedback on effective bullets for Elk hunting. I am considering the Sierra Gameking in a 180 grain or a Nosler Partition, also in a 180 grain. Let's hear some other hunters thought's on this matter.