Don't do it. I did it with a 300RUM, my first, and looked at the rifling before and after with a borescope, and my rifling after looked like they were rounded off. Also, accuracy went from 1.2MOA to 2MOA. I never could get the accuracy I originally had.

I am not sure if my load was too hot or if this is not a good option. I used H1000 to load them which may have been too slow. Either way, it cost me a new barrel. At least my new barrel was a krieger which has been smoother than a babys but.