For deer out west, with a .30-06, my first choice would be 150gr, 2nd would be 165, personally a .30-06's goto is 150, and when on bigger/heavier game its 180grs, I'd try to find a 150gr that shoots great.

Corelokts should be fine, how far do youplan to shoot? would you take a 500yd shot? do you expect to on a mule deer in Utah?

I think any bullet from a .30-06 in 150gr should work, corelokts, or any premium bullet like a barnes, or a nosler. or just a hornady SP.

My adivce find a 150gr that shoots well,