I recently purchased a 1990s vintage 116, S/N F450xxx. Last night I was taking a good look at the muzzle end and noticed that the bore has what appears to be faint and very fine honing marks similar to what you would see in an engine cylinder. They are on both the lands and grooves. Rifiling appears to be in excellent shape all the way to the muzzle. Just wondering what may have caused these. I have no history on this gun, but the rest of the metal looks like new. Bolt was extremely stiff from machining burrs in the cocking mechanism, which have since been taken care of. Closet queen perhaps?
AP