So I recently bought a Ruger SR9C and after putting about 30 rounds downrange unnoticed that there was some copper on the feed ramp. After breaking it down and cleaning it, the copper came right of. I was curious to see if that was a normal thing to happen, the hollow point "painting" the feed ramp. Or of it was an issue with my ammo or my gun. The ammo was Remington UMC 115g 9mm JHP and the gun is brand new.