Re: Help with caliber selection?
I second buffalobob's opinion. A bull elk is a very tough animal, while our eastern whitetails (in my opinion) aren't half as tough. Since you already have an excellent elk cartridge(300weath), you should invest in an excellent whitetail cartridge(especially since you hunt whitetails almost exclusively). Any member of the 308winchester-family of cartridges, in an accurate rifle, would be plenty adequate for whitetails out to 500 yards w/ an appropriate bullet.
Small, accurate and efficient cartridge = less recoil, less noise, less-empty wallet = more practice/fun = a confident and deadly crackshot.
With all that siad, a 7mm mag would be a great deer cartridge and would always kill as well as a comparative 300mag. Finally and most importantly, you need to choose the cartridge that YOU want to hunt with. See ya later, Drew Stuart