Quoted:
This will be my first time hunting elk. I'm heading out to OR this year with my dad, and I'm trying to research a few things to help insure success. I'll be using a 300 wm. I don't reload, and I need info on what the best factory load would be. I assume I need a controlled expansion, heavier bullet. Please no suggestions on super expensive ammo. I don't need to keyhole shots on paper, but I obviously don't want anything that isn't consistent either. Right now, I'm using the Winchester power point 180 grain just to get some range time. I'll happily listen to any suggestions.
"please no suggestions on super expensive ammo."
You can't have your cake and eat it to. If you want premium ammo you will pay a premium price. I have shot three Elk and never used a premium bullet on them. Once with the standard Remington cup and core bullet and two hand loaded Sierra Game king bullets. I know I will be flamed for stating that but just saying what I have used.
Use the cheap ammo for practice and once you are comfortable with the rifle buy a few boxes of the ammo you want to hunt with. Federal makes the Fusion line of ammo which is loaded with Barnes, Nosler, and Sierra bullets. The Remington Core-lokt Bonded ammo uses Swift bullets.