If you're shooting up that many shells in deer camp, you probably need to do a little more target practice before you get there.. If it's just because you have a poor memory, and can't remember to bring shells along, there's always a demand for a camp cook...
I have a .30-30, a .243, a .300 Savage, a .308, a 6.5 Swede, and a .30-06. They will all put a deer down. But for a clean consistent kill, none of the others will do a better job than the Swede, It's a nice caliber to shoot with little recoil, and very good accuracy. No speed demon, but excellent penetration due to the sectional density of the bullet, so it can be used for larger game as well. It would make a great rifle if you ever plan to hunt mulies or antelope out west. (bring ammo along - you probably won't find it at the local convenience store)
No idea how the Creedmoore cycles, but if it didn't, I would send it back to Ruger.
As an aside, Tikka chambers some rifles in the 6.5 Swede, and this would be a good choice as well.