Like the title says. I bought a .30-06 rifle cleaning kit from walmart. its got a 3 piece brass rod i've screwed together. and it has a copper wire brush that screws onto the end. it says to saturate that brush with the included nitro solvent gun cleaner and push through the barrel several times. The copper bristles won't damage the inside of my barrel, right? I know not to hit the inside of the gun with the brass rod. it then says to take off the brush and put on the plastic tip and push one of the foam cleaning pads through that is soaked in the gun cleaner, and then push a dry pad through. it then says to lubricate the moving parts with the included gun oil. but everything already has a thin coat of oil on it and operates fine, so I make skip that i'm just worried that the copper bristles on the brush will damage the inside of the barrel.