Sorry if this has been covered, I searched but didint really find much. Im looking into a 5r built. whats the difference between the 5r reciever and other rem 700 actions. I got the barrel info. and ive seen where people have duracoted the stainless finish, when duracoted is the inside of the reciever done aswel? would that affect the feeding? If the 5r is not the way to go what would be the best way to build a Rem 700 bolt gun? thanks for the info aheaad of time.