I think it was Elmer Keith that said to clean the receiver and components with gasoline and use any lube sparingly. Today, we have much better options. I've use military ammunition as well as hunting ammo in my 308 for a long time. A good cleaning bares everything down to the metal then it gets Teflon dry lube only where needed. Chamber get special attention to be as smooth as possible. The little brush that was included when new in most 742s does a fine job if not misplaced over time. I lucked out and found five spares where I use to work. Not got the "chattering" damage as of yet with this system. Hunting season sees the rifles in the vehicle overnight so there is no build up of condensation day after day.