Shooter's Choice is a good cleaner for getting powder fouling out of your bore. I use it myself (mixed with Kroil). However, it is not the best choice for cleaning copper out of your barrel. Other products such as Barnes CR-10, Sweet's 7.62 or Wipeout are better at this. I use a two step cleaning process, first using SC to get the powder fouling out and then CR-10 or Wipeout for the copper fouling.

Do a search for bore cleaning and you'll find it has been discussed before on this forum. I previously posted my own cleaning methods and the products I use. Others use different products and have different methods. Contrary to what the previous poster said, I don't think Break Free and a bore snake are your best bets.