As a hand loader, YOu can get 30-06 brass alot cheaper and it can do anything you need it to as long as you do your part.
The 30-06 it cheaper if you don't hand load. Both rounds are very flexable if you load your own as they are both 30 cal one of the most popular rounds. You can load a 300 Win mag with a 110gr hollow point just as easy as a 30-06. You get a lil flatter shooting round witht the 300 Win mag and with that does come some better terminal ballistics. I know a 30-06 can, will and has taken every form of north American Big game. Same for the 300 Win Mag. If I were to choose one rifle of the two I would pick (and have in my vauly
the 3006. I'm a big fan of it ammo is everyplace and affordable. YOu can still pick up mil-surp. All the power in the world won't make a diffreance if its not placed right by the shooter. Now IF I were to go out for a big Grizzly bear and had to choose between the two the Win Mag would go. It's nice to have that lil extra umph. However I would feel underguned with the 30-06. Both are fine cartridges sure the 300 win mag has extra umph but to me its not really worth it.