Bullet selection for Arg. 1909 Mauser 30-06

[wolfz]

I recently bought a very used, but functional Arg. Mauser 30-06. The barrel slugged out to be about .308-.309". I'm going to fire polish the barrel with a NECO kit and expect the inside to slug .309-.310". My question is, should I use .303 bullets (.311"). I have a quality .308 Win that slugs .3065" and takes .30 cal bullets (.308"). I would appreciate any comments/help. I'm also going to post this message on the "rifle" forum. wolfz