Hi all. I have a VC double in 450-400 NE and am in the process of cleaning the barrels. I've only put 4 rounds through it myself, as well as the ones fired at the proofhouse, so it has not had a lot of rounds put through it yet. My concern is the amount of copper fouling in the barrels. The lands looked like they were copper plated. I've been cleaning it for several hours now using Pro Shot copper solvent IV in conjunction with patches, bronze bore brush and even 0000 steel wool. The build up is less evident now on visual inspection but the patches are still coming out bright blue, so I think I'll be spending a few more hours on the barrels. The only ammo its been fed is Hornady DGS. Its my understanding these bullets have a copper wash over the steel case. Is this why its leaving so much copper behind? Any thoughts would be appreciated. Thanks.