I personally have used a .243 for many years and have never lost a deer with it. I have used both .308 and .270 as well but, if I were looking for a first deer rifle I probably would go for the 7mm-08. It is considered by many to be the best all around deer cartridge on the market. Also keep in mind that while .270 isn't terrible on recoil, the Ruger American is a fairly light weight rifle and the lighter the rifle the more you will feel the recoil. I also feel like the .270 is more gun than is needed for the distances you are speaking of. Might as well have the .284 bullet moving a little slower at those ranges than the .277 at a higher speed.
Last edited by slappy; February 10, 2013 at 06:07 PM.