30-06 okay,

100 yard sight in, if that is what is appropriate to your sight distance/opportunity distance where you will be hunting and it is what you are used to.... okay,

IMHO, 150 grain Cor-Lokt's are a "deer round" for a 30-06, I'd recommend 180 grain Partitions (or better) for your 30-06, Elk are very durable when compared to deer, so I recommend you feed them stronger medicine --- recheck your sight in. (This very point has been hashed several times over the last two years and the premium bullet advocates always have a dominant ratio of responses, but there is always someone....) Search it for yourself.

Good Luck,

EKM