Economicly speaking, since deer are not that hard to kill, I would start outshooting the lower price tier ammo like Federal Power Shock, or Remington Core Locks in 150 grain and see how they perform out of your rifle. Last year using $11.00 per Federal Power Shock ammo in 150 gr., I shot a 260 pound buck in the vitals at75 yards, and he dropped dead on the spot. My opinion is you really don't need premium ammo for deer.

See attached photos of the buck.

http://i243.photobucket.com/albums/ff75/huntingthenorth/DSCN3862A.jpg
http://i243.photobucket.com/albums/ff75/huntingthenorth/DSCN3878.jpg