snuffy
I hear ya, but I doubt I will ever clean any of my personal firearms like I do my issued ones, or as much.
It may very well cause wear, "conventional" methods might cause wear also, but we would have to clean them soooo much over a very long time that I believe that the nature of shooting them will wear them out far faster than any method of normal cleaning will. I will admit to seeing SFPs let them dangle on the floor, or ground getting all dusty (talc sand) and then pulling through the bore. I am certain that some kind of damage can be expected from that kind of abuse. and dust on the rope grinding into the crown for sure will destroy accuracy so I can see where you come from. My bore snakes are kept clean and not used if they get dusty. Just to clarify
If I notice any wear I can track down to the use of a bore snake I will for sure let ya know.........