In your photos the forcing cone has a number of concentric rings that look like tool marks. Is this normal in this gun? The reason I ask is I just bought a new 63 (3") and it has those same marks. It bothered me so much I sent the gun back to Davidson's (gallery of guns) And asked for a replacement. It looked like something that would accumulate lead quickly and hurt accuracy. Am I way off base here and that's just the way they're built?